In a medieval yet futuristic world, Clay, Aaron, Lance, Princess Macy, and Axl are five young knights who protect the kingdom of Knighton and its capital Knightonia from Jestro, the Book of Monsters, and their army of Lava Monsters.
Dalam dunia abad pertengahan namun futuristik, Clay, Aaron, Lance, Princess Macy, dan Axl lima kesatria muda yang melindungi kerajaan Knighton dari Jestro, Book of Monsters, dan tentara mereka dari Lava Monsters.