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Decorated soldier Captain Colter Stevens wakes up in the body of an unknown man, discovering he's involved in a mission to find the bomber of a Chicago commuter train. He learns he's part of a top-secret experimental program that enables him to experience the final 8 minutes of another person's life. Colter re-lives the train incident over and over again, gathering more clues each time. But can he discover who is responsible for the attack before the next one happens?