Makoto Kubota, a carefree leader of a youth gang under the Izumo Group, finds his world shaken when he encounters a mysterious drug known as Wild Adapter. This substance, with deadly consequences, alters his life irrevocably. Alongside the enigmatic drifter Minoru Tokito, Kubota ventures into the intricate web of Wild Adapter's secrets, forging an unexpected bond as they unravel the drug's mysteries.