The world of Croket! is one inhabited by both humans and exotic creatures such as anthropomorphic animals and where individuals called Bankers travel around the world to collect magical coins called Kinkas with their Kinka Banks. Kinkas are said to activate the appearance of the Bank Wizard, who will grant the wish of any Banker who collects enough Kinkas. The story mainly revolves around Croket, a young and scrappy Banker with incredible strength whose wish is to revive his father, a legendary Banker named Burger, who was said to be defeated by a villain Croket knows as the "Black Gown Man."