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Chen Mo was an excellent grassroots criminal policeman who sacrificed his life to save his partner Lin Feng during an arrest operation. He traveled back to the day when he was a freshman at the Public Security University, and single-handedly arrested a Class A wanted criminal, received an award for meritorious service, and activated the system. While studying in college, he used his spare time, winter and summer vacations to assist the public security organs in solving extremely serious cases many times, which attracted the attention of the top management of the Ministry of Public Security. He was specially approved to graduate early and was awarded the rank of first-class police superintendent and was asked to set up a national extremely serious case investigation center to be responsible for the detection of extremely serious cases across the country. From then on, his life reached the pinnacle.