Jonathan is a part-time employee of the law firm. He is well-dressed and well-controlled. He never has any other programs after get off work and goes home to sleep. But the first thing he does every morning when he wakes up is to turn on the screen and let the people in the video tell him what he did the night before. John in the video looks exactly like Jonathan, but he lives a completely different life, free and even bohemian. Jonathan and John are the most unusual brothers. They have very different personalities, but they share the same body. They each have their own day and night at 7 o'clock in the morning and evening. When Jonathan began to feel inexplicably tired and a strange business card appeared in his pocket, facing John who was hiding something, he hired a detective to start investigating himself at night. Bill Oliver's first directorial performance was impressive. He infused the simple images and smooth rhythm with strange emotions, gradually revealing a sci-fi perspective. Hollywood rising star Ansel Elgort, who swept the film industry with "The Fast and the Furious", took on the leading role again, playing two roles, both good and evil, and was not inferior to the powerful actress Patricia Clarkson.