The film is adapted from the true story "The Killer Girl in a Wedding Dress". After serving 27 years in prison, Lao Qin (Fan Wei) is released from prison and just wants to get married and have children to start a new life. However, he unexpectedly meets Chang Juan (Zhou Dongyu), a girl who has also just been released from prison. He wants a child, while she wants money. The two "both wanderers in the world" start a marriage of interest with their own purposes.