Morrigan attempts to feed off the life energy of a human, but she is stopped by the dark hunter, Donovan Baine. The two fight, but Morrigan eventually retreats. Meanwhile, Felicia and Harry fly to England, as Harry has found out that the ring of the black dragon is on display in the British museum. It looks exactly like a the drawing of ring in a book Elijah Grimoire wrote, and Felicia hopes the ring will help Harry master his powers. Morrigan decides she needs a magical boost, and recalls the ring of blood is in the British museum.

Felicia and Harry enter the museum and find the ring, but Felicia says they won't just let Harry take it. They sneak in later, only to find Morrigan. Morrigan manages to get the ring she was after, but needs the blood of a Darkstalker to use its power. She captures the defeated Felicia, and leaves.

Donovan shows up, having tracking Morrigan down with his spell sword. He creates a portal and goes through it to follow Morrigan, but Harry follows him. Donovan arrives at Glastonbury Tor, just in time to stop Morrigan from killing Felicia. The two start fighting, and when Morrigan gets knocked down, Felicia is released. Morrigan notices a cut on her finger, and places the ring on her wound. This activates the ring, and summons the spirit of Morgan le Fay. When Morgan finds out that Merlin, her enemy, has been dead for centuries, she gives her power to Morrigan. Donovan and Felicia try to attack, but are both easily beaten down.

Harry says he won't let Morrigan hurt them, and then, the spirit of Merlin appears. Merlin tells Harry that the ring of the black dragon has no power, the power is within himself. He then tells them to behold, and shoots an energy blast at Morgan, destroying her. Morrigan collapses, and the ring of blood vanishes off of her finger. Merlin tells Harry to never stray from the path of truth, and his power will never fail him. He tells him farewell, and vanishes.

Morrigan tries to convince Harry to join up her with, but he refuses. Donovan and Felicia confront her, so she swallows her pride and begs Demitri for help. Demitri has her beamed up to Pyron's ship. Donovan says the night isn't over yet, as he still considers Felicia, a Darkstalker, an enemy. Harry says he's telling him this for the last time: Felicia is his friend. Donovan tells him that he'll respect his wishes, but says he can't promise it'll be the same when they meet again. He then creates a portal beneath himself, and sinks through it. Meanwhile, on the ship, Morrigan tells Demitri about Harry, Merlin and Donovan. Demitri asks if she's sure about Donovan, so she asks him if he's afraid of a mere human wizard. Demitri turns around and sheepishly says he fears no one.

Notes

-This episode has the smallest regular cast size of the whole series, with only four main characters showing up: Felicia, Harry, Morrigan and Demitri.

-Morgan le Fay is voiced by Saffron Henderson, who also voices Morrigan.

-Merlin's voice actor, Richard Newman, also voices Pyron.

Errors

-Donovan's name is spelt "Donavon" in the episode title card.
-Donovan's leg guards are missing during this shot.
-When Donovan says "I call myself the dark hunter", he's showing firing an orange projectile. But then, during the next shot, Morrigan is seen defending herself from a blue projectile.
-During this shot, Morrigan is supposed to be leaping out of the way of several projectiles, but the projectiles never appear during the shot -the effects are missing! You can hear them explode as she leaps around though.
-Just before Morrigan kicks Donovan, there is a shot of her flying towards him. During this shot, for some reason her eyes have a white glow effect. But as Morrigan moves forward, the effect becomes unsynchronized with Morrigan, leading to a pair of eyes appearing on her as she moves out of shot.
-When Felicia moves her cup of milk to her head, part of her head goes missing behind the cup.
-During this shot, when Felicia turns her head, her glasses overlap her face.
-It's called the "ring of the black dragon", yet the images of it show a bronze colored dragon.
-When the bats scatter, one of them to the right is overlapped by Morrigan for a few frames, making him look massive.
-When Morrigan exits her train carriage, it had a blue roof. During the next shot, the roof is red.
-During this shot, check out the moon -it's huge!
-The ring Morrigan puts on goes missing throughout the rest of the museum scene.
-When Harry says "the ring!", the ring he's seen picking up is clearly the ring of blood. For the next shot, the correct ring is shown.
-Morrigan is seen putting the ring on her left hand's index finger, but for this shot, it's suddenly on her right hand's ring finger.
-Morrigan's ring goes missing again throughout the rest of the episode, for the most part.
-During this shot, the ring is now on the middle finger of Morrigan's left hand.
-When Felicia tells Harry to activate his ring, Harry is wearing the ring of blood instead of the ring of the black dragon.
-When Merlin says "learn now that the ring has no power", Harry is wearing the wrong ring again.
-During this shot, Morrigan's red sleeves are missing.
-Demitri's eye pupils are colored black instead of red during this shot.
-As Harry says he doesn't think he'd get along with Mr. humor-impaired, watch Felicia -her mouth keeps moving as if she's supposed to be talking, but she doesn't say anything.