Ricky, Jennifer, Gus, and Donald wake up in a room with no idea how they got there. A voice is heard from overhead speakers, introducing himself as Walden and informing the four about an experiment they have been chosen for. However, once it is revealed that this experiment is a bit more deadly than expected, the test subjects must band together to outwit Walden and his hitman-for-hire Oleg to escape with their lives.