Having staged a dungeon break, Douxie and Claire work covertly to get Arthur and Morgana Le Fay to reconcile, but with Past Merlin and Archie getting involved, Douxie is getting on his master's last nerve. Meanwhile, Jim and the other trolls who were freed are now living in the Wild Woods, protected by a younger Gunmar and his son Bular. However, despite the group's efforts, Jim's new friend Callista gets hurt, Bular is captured by the knights and Morgana, enraged by Arthur's stubbornness, turns against the rest of Camelot's people when they try to kill Jim and Claire right in front of her. But, in the final battle, Arthur cuts off Morgana's left hand with Excalibur and watches as she seemingly falls to her death and disappears into the water below.
In the end tag, Arthur and Claire grieve Morgana's demise and Jim (seemingly on the brink of death) crosses paths with a younger version of his troll mentor Blinkous Galadrigal/Blinky.