Yat is a hard-drinking widowed taxi driver. With a bad relationship with his policeman son and his health failing, the last thing he needs is to get into traffic accidents and conflicts but fate keeps him colliding with a Pakistani refugee until a car crash happens. Stricken with guilt, he takes on the role of protector of the refugee’s son, Hassan, a kid born in Hong Kong but seeing no future for himself there. Desperately in need of a father’s guidance and stability, Hassan lashes out at the world but Yat endeavours to win his trust.