Qiqi (Chrissie Chau) is going to marry her boyfriend, police officer Aze (Him Law), whom she has been dating for seven years, in a week. At a gathering of several friends, Qiqi meets photographer JACK (Shen Zhiming) and has a one-night stand with him after drinking. Qiqi, who is filled with regret, wants to end the relationship quickly. However, the next day, the two meet again. At the instigation of her friends, Qiqi and others go to a concert with JACK. That night, Qiqi accidentally discovers signs of Aze cheating on her, so she asks JACK to catch him cheating but nothing is found. When the latter leaves, he invites Qiqi to spend another three days with him before getting married. On the other hand, Aze, who is on a mission, exchanges mobile phones with street girl Abao (Charlene Yeung). Aze, who has never thought of betraying his girlfriend, has since fallen into a short and incredible relationship. The two who are about to get married have taken their own love forks...