A hidden door. A magical staircase. Discover the world of Droon! There's only one passage between the Upper World and Droon -- the magical rainbow staircase. At

Eric and his friends must stop Emperor Ko from finding a secret hidden underneath Zorfendorf Castle.

A hidden door. A magical staircase. Discover the world of Droon! There's no place like home! Eric and his friends have finally restored the Rainbow Stairs, but

Eric, Julie, Neal, and Keeah find a mystery hidden under Zorfendorf Castle as they try to stop Emperor Ko, who has launched a surprise attack.