Seven youth aboard a vessel at sea. Party, alcohol, drugs, sunbath, sex… The next day they are to live the worst hangover of their lives.

A summer resort on the coast for beautiful people. Beach, discos, sports port… Germán suggest her friends to spend a few days sailing on the impressing vessel of her father, as the latter is travelling abroad. The idea causes outbursts of enthusiasm. They buy provisions, not the less alcohol and some “stimulants” for the night parties on deck. What begins as a pleasure trip will come a real nightmare with a totally unexpected final.