The rock band "The Mosquitoes" arrive on the island for some much-needed R&R. But the castaways try to make their lives miserable so they'll want to leave--and take them with them.
A Hollywood producer lands on the island and is unimpressed with Ginger's acting abilities, so the castaways put on their own production of "Hamlet" to get the producer's attention.
Gilligan finds sunflower seeds on the island that gives him the ability to read minds, and when the fellow castaways find out, they want in on the action.
The castaways start disappearing one by one, and when the remaining castaways discover that headhunters have not taken them, Gilligan begins to think he's a "Dr. Jeckyll and Mr. Hyde" and has killed them all.
Gilligan and The Skipper find a government briefcase with top-secret information in the lagoon, and when Gilligan handcuffs himself to the briefcase, he becomes afraid that the enemy will come to the island and kill him.