Felipe a wealthy businessman who has been quadriplegic, due to an accident, is looking for a therapeutic assistant. There are several highly qualified, but he decides to take the assistant of his gardener, Tito who has decided to resign.
Deep within Buenos Aires's labyrinthine subway system, a train mysteriously disappears along with its 30 passengers. The subway officials are greatly troubled and call in topographer Daniel Pratt to help them find it. Unfortunately, the tunnels are so vast and complex, that Pratt needs his mentor Hugo Mistein to help him. Unfortunately, he has vanished too.
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.
