In Miami, Florida, biker gang leader Edward "Diablo" Santer is about to be executed for murder when he proclaims his innocence and vows revenge from the grave. When a mysterious biker comes to town during Spring Break festivities, leaving several teenagers electrocuted to death, some begin to suspect that Santer has made good on his promise.
The Roman taxi driver Pietro Marchetti finds himself to witness a mafia crime. Having to testify at the trial, he is checked by the police, especially when he has to go to the United States to attend the graduation of his son Francesco.
In 1978, $20 million was stolen from a Detroit bank. One of the robbers was caught, one was found dead, and the third disappeared. The money was never found. Seven years later, the robber who was caught was released from jail. He immediately went to Miami, only to be found dead the next day. Now FBI agents Doug Bennet and Steve Forest have been called in to investigate the case while posing as Miami police officers. Somewhere in Miami the third robber is hiding with his $20 million, and he has a seven-year head start on the authorities.
After Doug picks up hitchhiking Rosco with his truck, they are mistaken for two bank robbers by the traffic police. They manage to escape only to be confused for two secret agents while trying to take a flight at the airport.
While delivering a parking ticket to a small village in the Florida everglades, Officer Dave Speed finds himself in the middle of a radiation experiment conducted by the American government and NASA, where a detonated nuclear missile gives him a multitude of superpowers.
A man accidentally learns that he has a mystical connection with sharks, and is given a strange medallion by a shaman. Becoming more and more alienated from normal society, he develops an ability to communicate with sharks telepathically, setting out to destroy anybody who harms sharks. People enter into his strange world to exploit his weird passion, and he uses the animals to gain revenge on anybody who double crosses him.
