A research vessel is heading through an asteroid belt, when some kind of strange gas cloud appears. The ship can't get out of the way, and the pilots find that they are unable to control their ship any longer. They send out a distress signal back to Earth, but then the ship disappears from radar entirely.
More and more ships are vanishing in the same area of space, which becomes known as the "Devil Zone". As word reaches Shuttle Base, Jan and the Rescue Team are wondering why Star Saber isn't doing anything about it, but in another area of the base the Brainmasters and Multiforce are hard at work building a ship for Star Saber to use. The Multiforce don't know what he needs it for exactly, but are told by Blacker that they will find out soon enough.
Back at the asteroid belt, the Thunder Arrow is on one of the larger asteroids and the case of the missing spaceships is indeed all down to the Destrons. The ships they've captured are being drained of their energy, with the Dinoforce working to get some whilst all the captured humans are being put to work for the cause inside a base complex.
Inside the Thunder Arrow, Leozack is praising the plan they have had and that everything is going along fine. He is instantly humbled when Deszaras tells him it is about time one of his plans actually worked. They will strip down all of the spaceships once they've been drained of their energy, then the scrap can be used to create an energy alloy. This time, Star Saber will not be able to stop them.
The work at Shuttle Base is completed and the V-Star is already concealed inside the new ship. Star Saber tells everyone that they have created a spaceship that he can hide in, and he is going to fly to the Devil Zone. He'll deliberately use himself as bait so he can find out what is going on. He'll have to go alone of course, and this idea is not approved by Jean. Jean warns that if something happened to him, then the Cybertrons would be left leaderless. But Star Saber insists and prepares for take off.
Later on Star Saber gets every Cybertron outside on Galaxy Shuttle's launch platform and leaves Blacker in charge of the team until he returns. Star Saber transforms into his jet mode and positions himself at the front of the recently created ship, which blasts off and is soon in space.
The Cybertrons head back inside to watch Star Saber's progress on radar. Holi notices the time and tells Jean that he needs to go to school, but he refuses to go as he wants to stay and see what happens to Star Saber. Blacker lets him, telling Holi that Jean sees Star Saber as a father to him, and that he has the right to stay. Jean goes to watch the radar, which shows that Star Saber has entered the Devil Zone.
As Star Saber continues on, the Destron-occupied asteroid releases the gas. Star Saber doesn't change course, and lets the gas hit him. Thanks to him being more advanced technology wise, Star Saber is not effected by it, but he understands how it would have caused problems with the human spaceships.
Star Saber has vanished off the Cybertron's radar and they're sitting around the base hoping for the best. Jean has the not so bright idea of contacting Star Saber over the radio. Blacker and the other Brainmasters rush in and tell him to stop it as if the Decepticons intercept the frequency they will know that something is up, and tell Jan not to worry as Star Saber will contact them as soon as he finds the Decepticon hide-out, and then they will all head to the Devil Zone in Galaxy Shuttle.
Meanwhile Star Saber's ship is then pulled in towards the large asteroid by tractor beams and is forced to land. Leozack inspects the new ship along with the Dinoforce. He sees that the ship is unmanned and that it seems to be made out of high quality material that no other human ship they've captured has had. He is about to check the front when Drillhorn runs out showing him the energy alloy that has been recently created. Leozack takes a sample to show to Deszaras.
Drillhorn shows the Dinoforce another sample, using it to blow up part of the asteroid. With them distracted, Star Saber transforms to his smaller robot mode and runs off.
Meanwhile in the Thunder Arrow, Deszaras is pleased with the alloy and demands more to be made so they can store it all in the ship. Soon the humans are set to work on it. Star Saber sneaks inside the base and tells one of the humans that he will get them all out of here, but for now they should keep working. He then heads back out and sends a message to the Cybertrons on Earth.
As the message comes though at Shuttle Base, Blacker decodes it and soon finds out where Star Saber is in the Devil Zone. He sends out Braver and Laster on Galaxy Shuttle to help him out, as Holi tells Jean that he can relax now since Star Saber is OK.
Back on the asteroid, Star Saber runs back to his ship and transforms, and reveals that the V-Star is there as well. The Destrons are surprised to see him and open fire, but he fires back at them and lets the V-Star go off independently.
The V-Star fire upon parts of the base, destroying the gas generators. Meanwhile Star Saber shoots down the other Destrons, but Leozack appears and threatens to destroy the complex where all the captured humans are.
Star Saber gets in the way and deflects his shots, as the rest of the Breastforce arrive to shoot at him.
The V-Star continues to attack, and starts shooting at the Thunder Arrow. Leozack sends the Dinoforce to defend their capital ship, whilst he and the rest of the Breastforce send out their Breast Animals to attack Star Saber.
Galaxy Shuttle then arrives, and shoots down the Breast Animals. As the shuttle lands, Laster and Braver run out. Star Saber says that he can deal with things here, and that they need to rescue all of the humans inside the main building.
The two Cybertrons batter down part of a wall and find all of the humans, and Laster tells them all to quickly get onboard Galaxy Shuttle. As they're doing that the Destrons continue to get totally wasted by Star Saber...
...and the Dinoforce aren't doing any better either. Gouryuu tells them all to retreat and they head back inside the Thunder Arrow. Deszaras finds out the situation and decides that they need to leave now with the energy they have. He doesn't care that Leozack and the others are still outside, as he launches the ship and heads away at full speed.
The other Destrons don't seemed to have notice that their ride has departed and are still busy fighting Star Saber, who has transformed into his larger robot mode. They use their weapons to chain up their opponent and begin to suck energy out of him, but he bursts free and then swipes them all with his saber blade, sending them flying into outer space uncontrollably.
As Star Saber watches the Destrons fly off he reports back in to Shuttle Base and says that their work here is done. Jean is very relieved, and says he was never that worried. Holi thinks he has some nerve saying that!
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