Rikuo is at a beach, looking for an outpost that's supposed to be there. He thinks there should be some evidence he's not alone, but then Donovan appears, and tells him he's not alone. Donovan draws his sword, and tells him he must know why he's here.
Rikuo thinks it's from some misguided belief that all Darkstalkers are evil. Donovan says he's not misguided, he knows Rikuo's heart is filled with darkness, even though he's curiously attractive... for a fishman. Rikuo says he's a merman, but Donovan tells him he'll perish without water. He strikes the ground, sending out an energy wave which causes Rikuo to sink.
Donovan says that dehydration takes so long, and he'd prefer to be certain of his demise. He goes to kill him, but Rikuo expands himself, and gets out of the sand. Rikuo tries to explain he's not like someone like Demitri, but Donovan says neither of them are human -that's all that matters.
Donovan then starts firing projectiles are Rikuo, one of which hits him in the back. He falls, as Donovan tells him if he surrenders now, he'll make his end as quick and painless as possible. Rikuo says he won't surrender, so Donovan throws out another projectile. Rikuo gets hit on his back again.
Rikuo gets to the sea, and communicates with the sea life, asking for help. An army of serpents and spiders attack, and retrain Donovan. Rikuo manages to get into the water.
Donovan destroys everything on him, and then teleports himself away. Meanwhile, a dolphin helps Rikuo further into the sea.
They arrive in Atlantis, and Rikuo thanks the dolphin. He says he needs to healing pool, so the dolphin heads off, whilst he gets into the pool. He says it has been a long day, but someone tells him it's not over yet. Morrigan and Bishamon appear, and Rikuo wants to know why they've invaded his home.
Bishamon says Lord Demitri has ordered Rikuo to join them. Rikuo tries to escape, but Morrigan summons some ropes to tie him up. Bishamon reports to Pyron that their mission has been accomplished, so Pyron tells them to stay where they are -he'll come down there himself.
Ship thinks this is a bad idea, as it'd be unwise for Pyron to leave the safety of this ship. Pyron says he's the master of the old races, no one can stand against him. Ship reminds him that most of his power comes from this ship, so he can't protect him if he goes down there. Pyron says he wants to see Atlantis, now that it's his, but Ship suggests bringing the merman here. Pyron refuses, and demands to be beamed down -otherwise he'll turn of Ship's pleasure circuits. Pyron is beamed down moments later, but as he arrives on Earth, something happens at a temple.
A hole at the top of it opens up, as Huitzil, a robot, flies out. Meanwhile, Pyron arrives at where the others are, and says Atlantis' reputation for beauty is well-founded. It's a setting worthy of himself!
Rikuo thinks Pyron wouldn't know taste even if he stepped in it. Pyron tells him he, the last of the mermen, is needed. The Darkstalkers need his strength and wisdom, but Rikuo asks if they need his real estate. Pyron tells him to think of a world ruled by the Darkstalkers, the crown jewel of his collection. Rikuo thinks he may vomit, so Pyron says darkness shall rule the Earth, and the humans shall serve them as slaves. Rikuo still declines, so Pyron grabs him and warns him to take care, or he'll serve as his slave.
Huitzil suddenly bursts out of the water, and introduces himself. He says he's the guardian of the two continents, and is here to protect his people from aliens. Morrigan asks what people, and Huitzil says the Aztecs, the Mexica: the first people native to these lands. Rikuo tells him he's about 500 years too late.
Huitzil says he was created to protect this world from aliens until his creator returns... aliens like Pyron. Pyron lets Rikuo go and says he belongs to no one. Huitzil tells him he's alien to this world, so must be sacrificed to the sun, to make the people safe, and their warriors strong. Pyron tells Morrigan to stop him, so she summons a sword. She swings it, but it shatters when it hits his leg.
Morrigan tries blasting him with a projectile, but he swats it aside and says she's no match for him. A large chunk or rock collapses above him and smashes him over the head, but it does nothing to him. He says friends of his enemies are also his enemies.
He hits Morrigan with a beam, which freezes her. Pyron tells Bishamon to stop Huitzil, so Bishamon charges forward.
He manages to slice into Huitzil, but then, the spirit of Orin appears, distracting him. This allows Huitzil to knock him down.
Pyron tries blasting Huitzil with energy beams, but even his powers don't work. Huitzil calls him a foolish creature, as he was created to destroy aliens. Pyron stops his attack and falls to his knees, so Huitzil says it's time for the sacrifice. He grabs him and flies off. Pyron screams for Morrigan to help him.
Morrigan tries blasting Huitzil, but her beams fail to harm him. He protects himself and Pyron with a forcefield, and then dives back into the water.
Morrigan is about to go after him, but Bishamon stops her and says this is Pyron's battle, not theirs. Rikuo thinks Pyron will make a terrific sacrifice, but Morrigan says she could say the same about him. Ship then contacts the group, wanting to know where Pyron is. Bishamon says Pyron was captured by the ones who claims to guard this land. Ship asks where Pyron is now, but Morrigan says who knows. Rikuo thinks they've seen the last of him.
Bishamon says the merman is correct. This panics Ship, who says they must rescue him. Morrigan asks why, so Ship says if Pyron is not returned to the ship within one rotation of the planet, he's programmed to self destruct. Rikuo says he has no problem with that, but Ship says he doesn't understand. If he self destructs, the ship's transwarp fusion pile with overload, with full detonation following almost instantly. The detonation will result in the destruction of the Earth, its Moon, and possibly the entire solar system!
Ship says he can't contact Pyron, but does have him on visual. He's being taken up the Amazon river. Morrigan tells Bishamon they've got to save Pyron, but he says they were ordered to capture the merman, and take him to the ship -nothing else. Morrigan says the situation has changed, as they have to keep that ridiculous computer from blowing itself, and the planet, into smithereens! Bishamon says their orders said nothing about prolonging the suffering of those on this planet. Ship then reports more problems: a cloud of smoke over the Amazon is now obscuring his visuals, meaning he's lost sight of Pyron.
Morrigan knows Rikuo knows the Amazon, and knows he'd rather not see it destroyed. She tells Bishamon she knows he wants to reunite with his wife, and get rid of that curse. Bishamon says she speaks the truth... perhaps for the first time. He agrees with her, and she says they need Rikuo's help. She tells Rikuo if he helps them find Pyron, and get him away from that stupid robot, they'll let him go when this is over. Rikuo asks if they'll also leave Atlantis in peace, and she says he has her word -although she crosses her fingers. She says time is running out, so Rikuo says he'll help.
He says he can't help with these ropes on, so Morrigan destroys them. He tells them they'd better take the Sky Fish, as there's no way of knowing how far Huitzil has taken Pyron.
Ship then contacts Harry and Felicia, and says he needs Harry's help. He says he's the computer, Pyron's better half. He needs their help, but Felicia thinks it's a trap. Harry asks him to explain, so Ship says it all started in act 1. After explaining the situation, Ship has Felicia and Harry beamed up.
They arrive on Pyron's ship. Felicia demands for Demitri to come out, but Ship says Demitri has been detained. They have more important concerns, and wants Harry to break apart his programming connected to the self destruct. Harry asks why he doesn't do it himself, but Ship points out his own lack of hands. Harry asks where he should start, so Ship leads them into another room. Harry starts using a computer, and says hacker Harry to the rescue.
Morrigan's group try to find Pyron, but Morrigan wonders how they'll ever find them. Rikuo says where there's water, he has friends. He communicates with a fish, who tells him that Huitzil and Pyron were following the river, but then turned north, up the Rio Negro. Morrigan asks if the fish pay attention to these things, and Rikuo says they do when they hear unearthly screams -Pyron was loud in his demands to be released.
Huitzil has taken Pyron back to his temple. He thinks the offering of Pyron's heart will make the sun go strong, as will the warriors of his people. Bishamon then throws his sword at him, which he knocks away. Bishamon lands on the temple and retrieves his sword.
Morrigan lands on the temple, and starts making her way up. Rikuo remains in his jet, and thinks it's a disgrace that an aristocrat of Atlantis should be reduced to helping his enemies. Meanwhile, Bishamon hits Huitzil from behind.
He tries to hit him again, but Huitzil creates a forcefield which protects him from Bishamon and Morrigan's attacks. He then starts fighting back.
Pyron tries to flee, but Huitzil grabs him and flies off. Morrigan and the others go after them. Meanwhile, on Pyron's ship, Harry is struggling to hack the computer due to it not using binary code. But he hasn't given up yet. Ship thanks him, as he has no desire to destroy himself, or their planet.
Harry asks how much time they have left, and Ship says they have 3 hours. Harry says he'll do what he can, but there are a few modifications he wants to try out as well. Back on Earth, Huitzil takes Pyron into another temple, which is hidden behind a waterfall.
They land on it, and Huitzil says Pyron must be sacrificed, for the good of the people -aliens are not permitted in this hemisphere. Pyron says his Darkstalkers will stop him, and seconds later, Morrigan, Bishamon and Rikuo arrive.
Huitzil activates another forcefield. Rikuo says there's no smoke up here, so can't Ship just beam Pyron up? Morrigan says not whilst the forcefield is up, so this is a standoff. Bishamon says not for long, and goes to strike with his sword. But it can't break the forcefield.
Huitzil places Pyron on a table. Pyron says he's a warrior among warriors, he can't do this to him! Huitzil says the braver the warrior, the greater the sacrifice. Pyron says he's not really a warrior, and suggests he sacrifices one of his own underlings instead. Huitzil says his underlings aren't aliens. Rikuo says they'd better do something.
Morrigan starts shooting at the forcefield, and Rikuo joins in. Rikuo then tells Bishamon to strike now, so he does. There's a big explosion...
...which leaves Huitzil in pieces. Ship contacts Pyron, and tells him to return to the ship immediately. Pyron says he won't leave the ship again, ever -this planet is a lot of work! He gets beamed up.
On the ship, Harry says he's got it. Ship thanks him for his assistance, and says he feels like a new machine. But as Pyron is on his way back, he tells them they must leave immediately. Harry says he was just getting into his higher memory circuits, but Ship says that area is restricted. Ship suddenly speaks in a woman's voice, saying that after all, a girl has to have a few secrets! Harry asks if they really have to leave, but Felicia says they have to go. Ship says unless they want to be here when Pyron returns... and lets Demitri out of the closet. Ship can't understand what's happened to himself, but then has Felicia and Harry beamed down.
Pyron is then beamed up, and says it's good to be back were things are normal. Ship asks his darling Pyron, his poor dear, if he's alright, which confuses Pyron. Back at the temple, Morrigan goes back on her word, and says there's the little matter of taking Rikuo back. Rikuo says she gave him his word, but she asks if he believed her. Morrigan says that's just what she likes in a man: curiously attractive, and dumb. Bishamon grabs her by her hair and says he believed her, so she will abide by her word.
Morrigan blasts his hand, and tells him he forgets who he's dealing with. He says she's the one who's forgotten, and tells her to let Rikuo go.
As they argue, Rikuo sneaks off back to his jet, and leaves. Morrigan says this time, she let him go -there will be other opportunities. She and Bishamon are then beamed up.
At Harry's home, Harry says he brought back some souvenirs. He wants to see if plugging these devices from Pyron's ship will radically raise his RAM. He wants a computer like no one else has, and Felicia says he's got that -the computer has started to float!
Back at the temple, it seems Huitzil has survived -he slowly starts to pull himself back together...