The head of the FBI explains that hippies were good, but that they have degenerated due to psychedelic painting, drugs, and becoming addicted to free love. Secret Agent Frank investigates Sandy, whose daughter has disappeared, apparently because of hippies.

When Gilberto Ramnes and his wife Greta divorce, she sells him back his favorite necklace. He meets Francine, a blonde American vacationing in Havana, and begins to pursue her. His assistant Lindström suspects she's there to steal from Ramnes. And when Ramnes discovers that Greta sold him a fake version of the priceless necklace, it turns out that Francine knows a thief who might be able to help ...