Wang Ruolan, an intern, accidentally discovers that her boyfriend and his friends have planned a relationship test, intending to use a prank to test how much she truly trusts him. She doesn't lose her temper on the spot. Instead, she focuses on tackling an important work project while quietly preserving the evidence. Her boyfriend loses himself in the charade and even makes a serious mistake at work. After gathering all the facts, Wang Ruolan recognizes the problems in their relationship, decisively cuts her losses, focuses on her career, and begins a new life of her own.