Quest of the Skeleton Warrior (S01E09)

Venger’s enslaved skeleton warrior, Dekion, reveals that he has located the Circle of Power, which resides in the enigmatic Lost Tower of the Celestial Knights. However, only those with pure hearts can enter and withstand the tower's challenges. Dekion, despite his past as a celestial knight, is barred from entry due to Venger's control over him. Meanwhile, the kids are directed to the Lost Tower in hopes of finding a way home. They approach Dekion with caution, but upon learning he’s a victim of an evil wizard’s curse, they agree to assist him. Once inside, the children are confronted by illusions that challenge their bravery, and each begins to succumb to their deepest fears.