From the producers of SPLIT, THE CONJURING and INSIDIOUS and the director of CITY OF LIFE and FROM A TO B comes a terrifying sci-fi thriller that will have you gasping till the very end. Set in a dystopian future which has been plunged into chaos due to a chronic water shortage, the story follows a small group of survivors seeking refuge with the only clean remaining water source in the area. When two visitors infiltrate their compound, they soon become pawns in a test for survival, where only one of them shall be chosen worthy.