AllMovie

Both the Skipper (Alan Hale Jr.) and Gilligan (Bob Denver) hope to qualify for the Navy if they ever get off the island. Unfortunately, the Skipper has gotten too fat over the years, while Gilligan is way too thin. As the Skipper manfully tries to keep on a rigorous diet (failing miserably all the way), Gilligan begins chowing down on everything in sight--include the Professor's phosphorescent dye-marking mixture!