In the mid 1990's, twenty French urban dancers join together for a three-day rehearsal in a closed-down boarding school located at the heart of a forest. Finished their work, they have a party. The atmosphere becomes charged and a strange madness seizes them. It seems obvious to them that their drinks have been drugged, but they neither know by who nor why. And it's soon impossible for them to resist to their neuroses and psychoses, numbed by the hypnotic rhythm of the music. A hallucinatory musical horror from the provocative French director Noe.