Harumoto Shu has been working at a game development company for 5 years. Recently, she was appointed as the person in charge of a large-scale game project jointly produced by China and Japan. When she was full of enthusiasm for future work, she discovered that the person in charge of the Chinese company as a client actuallyIt's Lin Dongyu, the ex-girlfriend whom Shu said a unilateral farewell to in college.

After the two broke up, Shu did not start a new relationship but focused on work.She has not been open about her orientation at work or at home, and is now shaken by the sudden appearance of her ex-girlfriend.On the other side, Dongyu has always hated Shu for being dumped without telling her the reason, so she has the sovereignty of the project and raises unreasonable questions to Shu.Dongyu, who is seeking revenge, and Shu, whose love is rekindled, what will be the outcome of these two opposing sides?