Elly continues dating Navy man Mark. Granny objects, convinced he is part frog. While Jed tries to keep Mark from eating his daughter's cooking, Granny works to find a cure for his amphibious ways.

Granny goes to extreme measures to keep Elly from Mark, who she's convinced is turning the family into frogs. Mark tells Jed more about his naval duties, especially about harvesting food from the sea.