School is out, and three girls head to the beach for vacation. Two of the girls are world-wise party-goers who attempt to loosen up their naive, virginal friend, whose uncle has allowed the girls to stay at his beach house. When the near-sighted, drug smuggling Captain Bly dumps his cargo of marijuana, the bales wash up on shore. The two party girls, Ginger and Ducky, quickly stuff the dope into giant bags and spirit it back to the beach house, where it fuels a party with assorted misfits, delivery persons, and passersby.

The girls of Alpha Beta need to raise $10,000 in two weeks to save the sorority house. Among their schemes to raise the funds are a beauty contest, a newspaper puzzle, and a baking contest. But when three guys hit the beach with love on their minds, bragging that they know the Beatles, the girls plan a concert with the Fab Four as the main attraction.

A young girl is killed at the beach in Malibu. Professor Otto Lindsay suspects that it is some form of mutated fish. However, his son Richard, who was a good friend of the girl, thinks that it is a madman who has a grudge against Richard and his friends. Soon the list of victims grows.

On the beach in winter, there is still a dedicated lifeguard, an old man waiting for a shark, and a child who is eager to see dolphins. Everyone has some hope and knots on this beach. It was not until the three girls who were served came to the beach and changed these three people, and the three girls also changed their views on the beach, which was just for fun. It turned out that as long as they put some feelings into this place, this was not just a beach, but maybe their world. One of the girls, Gina, unfolds all