On the way to collect materials for work, Tang Xiaosi came across a prisoner who had just been released from prison - number: 8433. Tang Xiaosi fell in love with 8433 at first sight and believed that 8433 was still a good person even though he was a serious criminal. Therefore, he enthusiastically helped homeless 8433 find a job and took him into his own home. From then on, two people with very different personalities began to live under the same roof.