In 1905, revolutionist Sun Yat-sen came to Hong Kong to meet revolutionary comrades. The Qing government sent a group of killers to murder him. Ordinary citizens from all walks of life joined together, blocking the streets and fighting off the assassins to keep Sun Yat-sen safe.

In a crowded city like Hong Kong, former lovers often cross each other's path. One night, a former couple reunites for one night as they talk about their past, their present, and the possibility of a future. Elsewhere in the city, a laundry shop girl has a crush on a customer, carrying on her days fantasizing about adventures with an inanimate version of him. Meanwhile, Po runs into a childhood friend and reminisces about the days of him as a teenager and his own infatuation with his best friend's mother. Back in the present, Po is contacted by a stranger with a secret about two people they know very well…