From a research laboratory for genetics, a test animal, a seemingly harmless cat, escapes. When it is to be captured again, unimaginably horrific happens... the cat manages to get on board a luxury yacht. The crew includes two female students with their friends, captain is the attractive Rachel. The three gangsters who have rented the yacht want to bring a hot prey to safety as soon as possible on the Cayman Islands. Everyone on the boat will face a deadly monster after no time, because the infected cat can transform from a nice pet to an unpredictable killer beast. Days later, a little boy discovers a washed luggage with a terrible content...