School's out, exams are over, and it's time for real life to begin. But before 12 friends from the International High School in Prague disappear to the four corners of the earth, they intend to throw the best party of their lives. The idea to stage the party in Prague's biggest swimming pool is illegal but cool. And when Gregor, the laid-back leader of the group thinks an idea is good, then no-one else from the group objects. But what begins as the night of all nights quickly turns into a life and death struggle, as the friends come to realise that death itself is on the guest list... A mysterious masked killer sets a hunt in motion that ranges through the facility's halls and corridors. As the kids panic it begins to dawn on them that the killer must be one of them...
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