Zeyu, a junior student, whose parents divorced and each moved into a new home. His originally cheerful and impoverished personality has become quiet and withdrawn, and his interpersonal relationships are weak. So he looks for a house and moves away from campus. He happens to find out about Lin Ying's "shared apartment" revelation. Although he has doubts, he still settles in calmly.
Lin Ying is a single woman who is a manager of a small company. She is sensitive and nervous, and often has sudden situations caused by whims. She is busy in her spare time and her family background is unknown. She cannot bear to look for a "playmate" when she is alone. She discovers the similarities in Zeyu's personality and happily welcomes him to move in.