In a world captivated by Action Duels, Yuuya Sakaki aspires to bring joy through Entertainment Dueling, following his father's legacy. His unexpected discovery of Pendulum Summoning propels him into the spotlight, drawing the attention of Reiji Akaba, who seeks to harness this new power. As Yuuya navigates fame and challenges, he strives to fulfill his dream of spreading smiles through dueling.