He was once an outstanding saboteur in the "school" and the legendary avenger from hell, but now he has transformed into a dark detective! He claims to only investigate big and shocking cases, but he is always invited by the Criminal Investigation Department to deal with trivial matters. Until one day, an ordinary insurance fraud case involved a group of extreme criminal gangs, and then a series of murders, kidnappings, killing factories, "seven deadly sins" murders, etc., Plunged the world into an abyss of despair. The only one who can see through the truth is Detective Han Feng!
