When Lin Xuan wakes up, he has become the most inconspicuous steel mill worker in Love in the Courtyard.
The "beasts" in this courtyard, the hypocritical Qin Huairu, the scheming Jia Zhangshi, the bully Xu Damao who only throws his weight around at home, and Silly Zhu, who pretends to be a good guy, are all troublemakers.
They think the newcomer will be easy to push around, but they don't know Lin Xuan has already seen through everyone's hand. Faced with moral blackmail, scheming for profit, and open and covert attacks, Lin Xuan relies on his expert locksmith skills and forward-thinking ideas to establish himself at the factory and make careful moves in the courtyard. With his wits, he repeatedly makes the greedy suffer, leaves bullies frustrated, and turns those who plot against him into victims of their own schemes.
Gradually, the courtyard's beasts discover that this seemingly mild-mannered Lin Xuan is even harder to deal with than the King of Hell...
