Geronimo's idea for a vacation filled with sandy beaches and blue skies gets off to a bad start when he ends up in a fleabag hotel that's falling apart.
Geronimo is invited by his friend Creepella von Cacklefur to her family's spooky castle, and he is surrounded by the gloom of the castle as well as by Creepella's creepy family.
Geronimo's friends and family help him get into shape for the big race after he is accidentally signed up for the Mouse Island Marathon. Includes tips for becoming a fit athlete and being a good sport.