Have you ever imagined that you can switch between multiple identities and start a new life at any time? In fact, Alice has been doing this for 15 years. However, at a party, her ex-boyfriend Tom, who used to be "Jenny", recognized her. Tom firmly believed that they had a lot of connections, but Alice just left in a hurry and refused to recognize him. Tom wanted to know what happened ten years ago and why Alice had such a rich experience. Under Tom's insistence, the two finally opened their hearts and talked all night long... "Complete Stranger" depicts the life trajectories of two people and explores the multifaceted nature of personality through a large number of sensory close-ups.