Koey believes "happiness" is like a bottle of Coke, it'll soon become flat if you don't enjoy it right away. After her parents immigrated overseas, she finds her freedom by living with her beloved grandmother. She pretends to go to school but is actually working as a promoter on the sidewalks. Simon believes "happiness" is similar to planting trees. You need to water it everyday; the real satisfaction comes when the trees blossom.
He has secretly loved a girl since he was twelve although people around him suspect that Simon is gay. He refuses to clarify which causes more misunderstandings. Willy does not believe in happiness. His father left his insane mother when he was six. He was such a lonely person that he wrote letters to himself. Once a three time motorcycle championship winner, he is now an unemployed guy. Three diverse lives cross over each other and test their personalities, friendship and love.