The King of Hell sentences you to death by midnight, but I can ensure that you live past morning.
The young man, Qin Lang, received the inheritance of a poison school by chance. He uses poison to kill people, uses poison to save people and he uses poison to chase beauties. With body of ancient extinct poison and a body of a martial artist, he walks around the city, and wanders around in the underworld.
Some random Kung Fu guy: I am trained in the martial arts and I am untouchable!
Qin Lang: I have poison that protects my bone and soul!
Some random big shot: I can assemble a thousand little bros!
Qin Lang: I can assemble a hundred thousand poisonous insects!
Some random stunning woman: A beauty brings disasters. Hidden poison on beauty, but you cannot attack!
Qin Lang: I practice in the poison arts, using poison to fight poison!