Yu Siwei and Fu Shaoting have been childhood sweethearts locked in a love-hate relationship. When a project goes awry, Yu Siwei digs into the truth—only to discover Fu Shaoting's unexpected involvement. Enraged, she confronts him in the men's restroom, and during their heated argument, a strange accident knocks them both to the ground. But when they wake up, they're in for a shocking surprise: they've swapped souls!