While searching for Amelia Earhart's plane, Rip and the gang find themselves taken aboard a floating airship in the sky, where Swooper finds a great new opportunity; Agatha finds romance; Rip and Saltine find a lot of trouble.

Rip journeys to the distant Puffland in pursuit of the Holy Grail to resurrect his late wife Bella, but his solo mission goes awry when the king arranges for Rip to marry his daughter.