The play tells the story of An Ni, a top student from a prestigious law school, who was assigned to the mysterious Fourth Procuratorate after joining the Procuratorate. Facing many difficult new cybercrime cases, she and her fellow prosecutors precisely targeted With the help of criminal clues and the ability of procuratorial wisdom, with the full cooperation of He Luyuan, the captain of the criminal police, they tracked across borders, went through hardships, searched for the truth, and finally arrested the hidden criminal suspects one by one. Prosecutor An Ni even made the criminal suspect plead guilty with a wonderful court prosecution, showing the professional style of the female public prosecutor in the new era. The whole play is based on the ten typical cases of cracking down on new types of cyber crimes that have been punished by national procuratorial organs since the 19th National Congress of the Communist Party of China. Against the background of high incidence of Internet crimes, how do criminals make money and kill people and use all means to empty the pockets of ordinary people? Thousands of miles away, the evil hand behind the Internet has given ordinary people a clear and safe cyberspace.