This film is based on the true story of the Catalan lawyer and engineer Narcís Monturiol i Estarriol (Figueres 1819 - Barcelona 1885) who invented the submarine.

Sole, Mari Pili and Marta are the twenty three young people hanging around who share a flat in Barcelona before the Olympics. Tired of sacrificing to find romance, wonder what need have expected the weekend to go to a nightclub and rolled with the first guy you meet. Then decide to take action and play a game: live an adventure with the first man who asks the name.