Kazuma Kiryu wakes up to find himself in Kamurocho in 1995, with no memories other than how to fight. In this illusory Kamurocho, created by the evil spirit Tamazusa, a sinister castle stands atop the Millenium Tower. The Eight Dog Warriors, who sealed Tamazusa away long ago, traveled through time and space in search of strong warriors to defeat the resurrected Tamazusa. To restore the world to its original state, three more strong warriors must be gathered. Goro Majima, Taiga Saejima, and Daigo Dojima have been trapped in the darkness of their hearts by Tamazusa, and living in a world of delusion. Kiryu and his companions - Akira Nishikiyama, Ichiban Kasuga, Eric Tomizawa, Yoshitaka Mine, Toru Higashi, and Fumiya Sugiura - begin to take action to help the three regain their memories.