- World view: Blue Star has experienced the "Great Rift Era", and "sky cracks" connecting different dimensions have appeared all over the world. "Beasts" that devour life have emerged from the cracks, and "secret fragments" containing extraordinary power have also dropped. In order to survive, human beings awakened the "martial arts gene" and established the "Crack Hunters" organization to hunt ferocious beasts, explore secret realms, and seal cracks as their profession. From this, the high martial arts civilization emerged.
- Male protagonist: Lin Ye, on the surface he is a good-for-nothing high school student who is full of complaints, but in fact he has awakened the strange talent of "ferocious beast domestication" - while others kill ferocious beasts to get materials, he can make ferocious beasts give up by nagging and feeding them, and can even take the big guys in the cracks home as pets.
- Heroine: Su Qingyuan, the aloof daughter of a martial arts family, the "Iceberg Goddess" in the school, super strong but a bit naturally stupid. Due to a crack crisis, he was saved by Lin Ye using the cool trick of "summoning the Erha ferocious beast". From then on, he was forced to be bound to this guy with a strange painting style. Every day, he repeatedly jumped between "wanting to beat him" and "seeming to be a bit reliable".
