我不知道……這世上除了奴隸和家畜外……還有在那以下的世界……一切，是從一封簡訊開始的。裡面的內容是早已認不出原貌的同伴的模樣以及被硬拔出的兩對肋骨……。

　　以設下仙人跳勒索金錢的龍夫，在一次恐嚇取財中惹到流氓，從此之後，龍夫的生活便一直往黑暗的深淵墜下，恐怖、恐懼的心情更是如影隨形！帶給他這一切的顫慄的〝斑馬〞到底是什麼人！？直到遇到那個男的之後……。

Dora (Ryo Ryusei) and associates runs a badger game scheme to extort victims out of money. One day though, their target looks like an ordinary guy, but he turns out to be a yakuza. Dora and his associates fall into a far darker world. Dora steps into a business that offers to take revenge on others by any means necessary.

동명의 만화가 원작이며 다른 사람에게 당한 수모나 아픔을 되돌려주는 회수 전문가들의 이야기