Derek (Stanley Huang), a managing director of an investment bank, is a little bit anxious recently. The A corporation he serves for is now planning to merge B corporation. The problem is, however, his ex-girlfriend Amy (Xu Jinglei[5][6]) works as a financial consultant in B. Half a year ago, after falling in love with each other about seven years, a serious crisis broke out. Derek devoted himself into work too much. As a result, Amy couldn't bear this after being ignored for too long and did breaking up impulsively. She even jobhopped to another investment bank. "Being together for no more than 28 days in a year, 365 days. Even so, he is also working and calling." When meeting again, they competes fiercely and both tries to defeat the other. They are persons who know the other one best, thus the most troublesome opponents to each. At the same time, they begin to open their hearts to each other again gradually. One night in Chengdu, China, they finally pour out their love and face it sincerely.