London's father challenges her to come up with an invention to appeal to young people. The others come up with a robot that cooks and kills, but London's idea wins the prize.
While helping at an archaeological dig, Cody hunts for Princess Xaria's crown. Zack finds it and Bailey is possessed by the princess' spirit. The others come to the rescue and free her.
The kids go to Germany's Black Forest and imagine themselves in the classic fairytales which were set there.