Mark shows Granny and the rest of the family a film about his navy job to help her understand his frogman activities. She remains unconvinced. Mr. Drysdale is alarmed that Jed wants to invest millions in underwater farms.

Granny and Mr. Drysdale are desperate for different reasons. Granny hopes that if Mark tastes Elly's cooking, he will leave. Mr. Drysdale dresses as Napoleon Bonaparte to keep Jed from investing in Mark's ocean project.