In the female-dominated city of Yueling, a group of killers hid in an inn waiting for a chance to take revenge. Unexpectedly, the inn was bought by a merchant lady, Lu Huaishuang. The killers who were good at kinds of weapons were forced to practice playing and singing, and the leader of them, Yue Qishan, even became the head of the inn under Lu Huaishuang's guidance, and also completely fell in love with her....