In Hiroshima, a gang known as "Beast," led by Hidenori Danno (Takashi Nikaido), is the number 1 gang in the area. The number 1 gang is "Nights".
Meanwhile, high school student Tsukasa (Kento Nakajima) happens to meet Yoji (Hikaru Iwamoto), Hisao (Shota Watanabe) and Eiji (Tatsuya Fukasawa) and become friends with them. Through his new friends, Tsukasa becomes involved with the gang "Gokuraku Cho".
One day, Tsukasa fights with the Shun, the leader of "Gokuraku Cho" and beats him. Tsukasa now becomes the 8th leader for "Gokuraku Cho".