A scientist's experimental invention goes wrong and opens a portal between the peaceful town of Gamebridge and Atreia, the world of the fantasy card game Mix Master. Through it pour hench, game creatures that range from comical to dangerous, and they start causing trouble everywhere. Eleven-year-old Ditt Lee receives a card mixer from the eccentric Dr. Joeb. With it he must mix the hench, using what he learned from the video game, to keep the town safe. Also slipping into the real world is Prince Brad, an evil ruler from the game who stirs up trouble for reasons of his own. Along the way, Ditt grows toward his destiny as the one true Mix Master in this Korean and Japanese co-produced fantasy adventure.