Together.

Comprised by two love stories: The first story features Donnie Yen as a traffic cop, “Mr. Cool” who never smiles due to a rare disease. He meets and falls in love with Michelle Chen, a patient with amnesia, and spends most of her time looking for her missing fiancé. The second story features Zhendong Ke as a Criminal Intelligence Bureau cop who falls in love with Angela Baby after a 7-day "game of romantic" with her. But when his bureau starts monitoring her, he begins to have doubt on her. Is she a criminal?