Wen Yining is frantically pressured by her family to get married. Just after rebutting a bizarre blind-date man, she turns around and runs into Zhou Yan, the notoriously difficult client in the industry. A fake dating agreement binds the two together, making them both professional work counterparts and next-door neighbors. Guarding her secretly for three years, he deploys step-by-step schemes to frantically update their dating terms. When the agreement expires and they should part ways, the client refuses to terminate the contract, wanting nothing more than to have a sincere, unscripted romance with her.