In order to avenge her father and save her seriously ill little sister, Zhao Yinghan, who was only fifteen years old, fought with bare hands and gained a reputation for her ruthless aura and extraordinary skills. At the same time, she captured a group of brothers and founded the "Yan Gang". Because of an unexpected mistake by a subordinate, she met Qi Mufeng, the third young master of the Qi family. From then on, two parallel lines intersected.