Song Cheng is an anti-drug policeman who works as an undercover agent in the Cambodian branch of the Blue Eagle Drug Manufacturing Group. There he sees the darkness of human nature. He feels like he is trapped in a swamp, and he doesn't know when he will be swallowed up. Shen Xi was trafficked to the Vietnam subdivision at the age of 10 and was trained to be a top poison maker. For 11 years, he remembered his sister's instructions to survive, but he also suffered from making drugs for himself. Their encounter allowed Shen Xi to be redeemed and Song Cheng to find his own world in the darkness.
Determination: I was born in the light. There must be people who long for light in the darkness.