Shen Xi is a peppy college student majoring in dance and loves to eat just a little too much. She has a boyfriend named Lin Yu Tang, who is very caring and sweet. He Zhi Zhou is an aloof, moody engineering major at a nearby university. One day Shen Xi and He Zhi Zhou suddenly swapped souls in front of a mysterious mirror. Zhi Zhou finds himself in the body of Shen Xi, and Shen Xi finds herself inside the body of Zhi Zhou. What will become of this soul-swapping duo? And what will happen with the relationship between Shen Xi and Lin Yu Tang?