Robie is suspected of a new rash of gem thefts in the luxury hotels of the French Riviera, and he must set out to clear himself. Meeting pampered heiress Frances, he sees a chance to bait the mysterious thief with her mother's fabulous jewels. His plan backfires, however, but Frances, who believes him guilty, proves her love by helping him escape. In a spine-tingling climax, the real criminal is exposed.

The bubbly inhabitants of Bikini Bottom are in trouble. When Plankton steals the secret formula for the delicious Krabby Patty, and frames Mr. Krabs for stealing King Neptune's crown, SpongeBob and Patrick step up to try to save their friends.