In preparation for the final battle, the heroic Legion of Light searches for the missing half of the Lightstar Crystal. Meanwhile, Ursak, Talyn and Prince Lightstar plan to free Dark’s prisoners, but their plans are almost foiled when Baron Dark releases his dragon upon them. Grimskull approaches the Cavern of Light but Baron Dark intercepts him on a treacherous bridge. As a fight ensues, Grimskull falls from the bridge into the gorge far below. Moments later Prince Lightstar, Talyn and Ursak arrive but cannot find Grimskull anywhere. Where’s Grimskull and what happens now?