A psychology student, he looks gentle and quiet on the outside, but is actually sensitive and stubborn on the inside. Because he was mistaken for someone else in his childhood, he extremely resists getting close to others. After an academic lecture, Professor Leng mistakenly identified her as her deceased senior sister, and she fell into a whirlpool of identity confusion. This became the key to Professor Leng's emotional recovery and the starting point for her self-reconstruction. The story surrounding Lin Zhixia and Leng Yanxiu begins with a fateful intersection and gradually becomes involved in a larger relationship whirlpool and growth test.