Holo Heroes Dennis and Shuan are boys who believe in their respective countries mythological figures. They order a holographic battle game that pits Chinese mythology creatures against ancient Greek mythology ones, in order to see which ones are the best fighters. Unfortunately, when they pit the Bull Demon King and the Minotaur against each other, both boys take out their power boost cards to win the game. Instead, the game malfunctions and bring the two creatures to life.