Martial arts action in the latest Hollywood adaptation of a video game. The world's top martial artists are set to compete in an invitational contest on a mysterious island. However, similar to I'm a Celebrity, Get Me Out Of Here, they are dropped on the island out of a plane and left to make their own way to the fight stage. After a grueling jungle slog, the fighting begins in a series of sudden death rounds. The film version is centred upon four female contestants who, at the start, are set to knock each other out but end up forging an alliance in order to combat an unforeseen obstacle.