Action Duels, which allow duelists to soar and swing alongside their Duel Monsters, are taking the world by storm. Thanks to an evolutionary breakthrough, the "Solid Vision" system can now give Duel Monsters mass. Yuuya Sakaki is the son of Yuusho Sakaki, who founded the You Show Duel School in Miami City. Yuusho maintains that duels are not a tool of war, but rather a means to bring smiles to people, and thus introduced the concept of Entertainment Dueling. However, at the height of his fame, Yuusho disappears and fails to appear for his duel with Strong Ishijima, the Action Duel champion. Though scarred by this sudden departure, Yuuya vows to become an Entertainment Duelist like his father. Several years later, during a battle with Strong Ishijima, Yuuya's desperation to win triggers a miracle. His pendant begins to glow, transforming his cards into Pendulum Cards, which allows him to perform a Pendulum Summon—a summoning method unknown to the world and to himself—earning him overnight fame. As a result, Reiji Akaba, CEO of Leo Corporation and founder of the elite Leo Duel School, begins producing new Pendulum Cards to integrate Pendulum Summoning into the system. Thus, the mysteries surrounding Pendulum Summoning and Yuuya's father begin to unravel, and Yuuya gradually learns what it takes to become an Entertainment Duelist.