In order to share the sky-high rent, Su Hang, a programmer in Shanghai, signed an absurd "cohabitation survival contract" with a strange beauty, Xia Yan. Later, he was horrified to discover that she was actually the company's new CEO who was famous for "rectifying the workplace." Caught between the terms of the contract and their true identities, the two went from being roommates who cheated on each other to becoming each other's warmest "optimal solution" in the cold city.
