Zhao Lie, a 35-year-old lower-income middle-aged man, his wife died of illness and his son died young. He was framed and imprisoned by his coworkers. At the darkest moment of his life, Situ Kuang, the number one master in martial arts, the "Evil Sword", found him and wanted to turn him into a human elixir. When he was about to die, an ancestral jade pendant in Zhao Lie's hand suddenly shattered, and time went back - he returned to the hot summer of 1980. Zhao Lie, who returned from rebirth, discovered that the evil sword Situ Kuang had also traveled through time and secretly controlled the underworld forces in the city. He was using evil skills to control people's hearts and was building a huge "human elixir formation". The conspiracy to kill his wife and children was also quietly brewing in this small town. Zhao Lie, who was an honest man in his previous life, decided not to be patient in this life. On the surface, he appears to be a cheerful ordinary worker with a hard mouth and a soft heart, but in fact, he secretly collects evidence of Situ Kuang's crime and uses every key node in his past life memory to plan a counterattack in advance. Faced with the exclusion of colleagues, pressure from leaders, and threats from the underworld, Zhao Lie counterattacked all the way and used wisdom and courage to overcome all difficulties. However, as the fight between him and Situ Kuang gradually intensified, he discovered an even more shocking secret - behind Situ Kuang, there was a pair of more terrifying eyes watching the city.