Two Vietnam War veterans are sedated and thrown into the sea on the orders of a crime boss. Two sailors put on the veterans' clothes and Colonel Morris confuses them and thinks they are the veterans.
Three friends at a beach resort work together to stop a gang from making a potion that can manipulate people's desires.
The new bathers, together with a spectacular bathtub, will arrive in Mar del Plata with funny gags on the beach, ingenious inventions, innovative traps and imitations, and with the help of the marine animals from the Aquarium, they will face an evil businessman, in a spectacular and fun ending.
