In Daxia, where monsters are raging, Jiangcheng No. 1 Middle School begins to awaken its powers. Ren Yi, the orphan of the martyr, awakens under the great expectations and is judged to be useless and the F-class wooden door becomes the laughing stock of the whole school. Only he knows that this door is actually a mysterious door. When the doorbell rings, the door spirit bell can be summoned to extract equipment and materials from all over the world. Get all Trick armor, modified firearms, and various strengthening potions. The good-for-nothing boy who was ridiculed by everyone in the past, holds a unique trump card, and embarks on a counterattack in a world where monsters are rampant.
