Chen Mo, a boy from Jiangcheng, awakens the most embarrassing talent in the whole school: an F-rank ability called "Dismantling." Everyone says he is only fit for dismantling spare parts in the logistics department. But only he can see the hidden structures of all things. He takes in a crippled gray dog nobody wants, breaks open its nine layers of sealed bloodline, and raises a useless beast into an ancient mythical species. He goes from the bottom of his school to shaking the world's order, only to discover that "contracts" are not a profession at all, but the underlying code of the world, and that "Dismantler" is an identity that has existed for countless eras and been repeatedly reclaimed by the "Old Covenant."
