Plot introduction: Yan Fei, a returnee who is proficient in mechanical design, wise, brave, and knowledgeable, faces the dilemma of a fall in his family and the detective's father being chased by gangsters. In order to stand up, he risked his death to take on the impossible task of rescuing the kidnapped warlord love daughter Duan Wanrui within five days, otherwise his family would be ruined. Cult conspiracies, bizarre fetishes, abnormal terrorists... The earth-shattering conspiracy has been culled. Can Yan Fei and his righteous partners pass the barrier smoothly and save themselves and the country and the world?