Ke Zhen Dong,Donnie Yen,Chrissie Chau,Michelle Chen,Bosco Wong
Officer Cool (Donnie Yen) is a nice cop with a troubling affliction, his face is unable to show emotions. One day, he stops a reckless driver and meets Jojo (Michelle Chen), an amnesiac that Cool remembers from his past. Jojo lost her memory after her fiancé abandoned her before their wedding, and she has been trying to figure out why. Feeling sympathetic to her plight, Cool accompanies her and slowly begins to fall for her in the process.
Boy (Ko Chen Tung) is a geek who chooses to find random love on the internet. His latest conquest is Nam Lee (Angelababy), a brand-worshipping career woman who would rather get rich her own way rather than relying on other men. Together, they enter a no-strings-attached seven-day relationship, only for Nam Lee to realize that she has really fallen for Boy. However, Boy has a secret that can potentially break their relationship apart...