In the technological city of Xinhai City, the "sin nightmare" spawned by the seven deadly sins of mankind feeds on negative emotions and erodes the world wantonly. Wang Ye, an ordinary young man, awakened the power of chaos when he was about to die. He could sense, imprison Sinma and condense weapons. He accidentally saved Qin Xue, a girl who had a special attraction to Sinma.
The two got involved in the dispute and joined the "Dawn Squad" to fight against the evil spirits together, dealing with various forces such as the official guards and the Nightmare Hunter Alliance. Wang Ye's power of chaos continues to advance, Qin Xue awakens to purify his powers, and the two gradually fall in love during the trials of life and death, and they also reveal the ultimate secret of sin and supernatural powers.
In the end, they gathered the human alliance to face the Lords of the Seven Sins. They used the power of chaos and purification to crush the threat of original sin, protect the city's reconstruction, and fulfill their lifelong promise to stay together in the peaceful years.
