The streets of Hong Kong are so congested that it's not uncommon for exes to run into each other. One night, a once married couple who are no longer together spends the evening together, discussing their history, their lives together now, and the prospect of having a future together. A girl who works in a wash shop in another part of the city has a secret crush on one of the shop's customers, and she spends her time daydreaming about going on adventures with a static representation of him. During this time, Po stumbles with an old friend from his younger years and begins to reminisce about the days when he was a teenager and his own crush on his best friend's mother. When we return to the present, Po receives a message from a stranger who has a story to share concerning two people they know very well...