Snake expert Chen Zhuo loses his father when no antivenom is available and vows to create a 30-minute antivenom rescue system. From venomous snakes in luxury apartments to deadly vipers on trains, every crisis hides greed, superstition, or corporate schemes. Teaming up with his ex-wife Jiang Lan and snake dealer Zhong Yingzhe, Chen stops chasing snakes and starts hunting the people behind them, turning his personal mission into a nationwide rescue network.