Corokke is an energetic young Banker, one of the adventurers who hunt kinkas, treasures said to grant any wish at all. Traveling with his partner Menchi, and later joined by fellow Banker Uster, he wants only one thing: to bring his dead mother back to life. That goal leads him into Banker Survival, a grueling tournament whose last one standing wins a savings box packed with kinkas. Rivals with wishes of their own gather to compete, among them Rizott, who fights to protect his hometown, and the mysterious Fondovo. Also in the mix is the Man of the Black Mantle, the shadowy figure Corokke must face for his mother's sake. The result is an action adventure fantasy with a strong comedic streak.