In recent years, there have been many cases of theft in this province, and the thieves are thoughtful and hardly reveal any clues. Ma Xia Chengfeng (Gu Guanzhong), a teenager, is entrusted by the state government's adults to ask Song Renfu, a retired arresting officer for help, hoping to get his help. Although Song Ren was paralyzed in both legs, he was very shrewd and knew the ins and outs of Ma Chengfeng like the back of his hand. In Song Ren's view, there is only one person who has the ability to steal large treasures, and that is the golden boy. Golden boy is cunning, only by surprise can he be arrested and brought to justice. Therefore, Song Ren let Ma Chengfeng get into the group of Golden Childe and sent his only daughter Song Xianer to help him.

Ma Chengfeng asked around and learned that the Golden Dress Childe (even played) recruited three masters to work for him, so he defeated the Big Mac and Flying Leg one by one in the middle, cut off his hands and found the Golden Dress Childe, hoping to work for him. Jin Yi's son is very skeptical about this new punk. He sent people to test again and again and found no defects. The martial arts of the three great masters have been abolished. In desperation, he had to take risks and let Ma Chengfeng finish the task. It turns out that Golden Boy and his wife, Mrs Thrushcross, are a loving couple. Mrs Thrushcross loves antique jewelry, and Golden Boy tries his best to satisfy her. However, who knows that at this time, Jin Yi's son is seriously ill, and the relationship between husband and wife has plummeted.

More importantly, Golden Boy suspects that Mrs Thrushcross is hiding another adulterer, and he has always been bitter about it. Later, he also asked Song Ren to help analyze the matter, but there was no result. After the two separated, Mrs Thrushcross stole the life-prolonging medicine of the Golden Dressed Childe, and only with rare treasures can she get some medicine. The son of Jinyi couldn't bear the torture and asked the master to steal this medicine at a high price to prolong his life. On the way to Qixia Mountain, dangers abound, and the owner of Mrs. Thrushcross is so good that Ma Chengfeng can't help but find it difficult to deal with it. Fortunately, Song Xianer appeared in time and saved Ma Chengfeng's life at a critical moment. However, Miss Lu, who was supposed to take him to see the golden boy of the Seven Xia Mountains, disappeared, and Ma Chengfeng couldn't help being suspicious.

At Mrs Thrushcross's house, Ma Chengfeng successfully got the medicine by means. Unexpectedly, Miss Lu appeared on her way back, took the medicine and almost killed Ma Chengfeng. I didn't know Ma Chengfeng was prepared for this. What was robbed was just a bottle of fake medicine. As soon as Ma Chengfeng saw the golden boy, he found that he had got a bottle of fake medicine, and the golden boy's men were hiding spies. At this point, Jin Tong discovered that the three right-hand men he had always trusted were actually the back office of Mrs. Thrushcross, and what surprised him even more was that this so-called thief turned out to be Song Ren whom he had always respected.