Mei has never been anyone's exclusive girlfriend in all her life. Every time she falls in love with a man, she ends up being a homewrecker in his relationship. Mei works in the customer service department and is involved in a relationship with Thiu, a married colleague. Due to Thiu's marital status, Thiu agrees to give 12 hours during the daytime to Mei and the other 12 hours to his wife. Mei is unhappy with the agreement but cannot get herself to leave Thiu because of love. Mei solves her love issues with Thiu by dating Atom, a man who shares her career at another company. Since Atom already has a girlfriend, Mei asks Atom to spend time with her only at night when Thiu isn't available. Instead of feeling fulfilled by two men, Mei wonders why she isn't truly happy.