Watch 123Movies. An astronaut finds herself stuck in the past: on the worst day of her life, when she was still at her training institute and an accident wiped out most of the world. She soon discovers that the day loops back to its beginning each time the world ends. The clock starts running out while she is stuck in the cycle with a brother who hides secrets, a noir detective who hides his motives, and a roommate who hides her love.