The Ding family has been in the business of catching criminals for generations, and their descendants are honored as "Flying Eagles". A mysterious person hires Ding Lan to investigate the whereabouts of the remnants of the "Baiyue Sect" at a high price. While investigating, Lan falls into his mother's scheme and is arranged to marry wealthy young lady Ni Tian'er. Unexpectedly, Lan disappears without a trace, which makes Tian'er furious and determined to seek revenge. Lan meets Zhao Ling and his father Zhao Hongyi, who is known as the "Sage of Martial Arts", at the Zhejian Mountain Villa. Lan respects him, but accidentally discovers that his wife Shui Ru is the mastermind behind the "Four Evils" gang. The mysterious person who entrusts him with the case is Wei Jinglun, the manager of the villa. Lan meets the beautiful courtesan Susu and pursues her passionately, only to find out later that she is actually Tian'er. On the day when Lan and Tian'er get married again...