This is a magical world where humans and demons coexist. The haze of the war against demons has dissipated, and the world has ushered in a peaceful day. Lina Inbas (voiced by Hayashihara Megumi) is a genius magician. She grew up in a grocery store. Due to her sister's advice, she decided to embark on a great adventure with the world as her destination. Who knew that she was targeted by a group of thieves just after leaving her hometown. These stupid thieves are no match for Lina at all. Just as Lina was about to punish the evil, a blond man named Gori Kabreev (voiced by Matsumoto Yasunori) staged a good show of heroism and beauty. In this way, Gori and Lina formed an indissoluble bond. As companions and close friends, they began their journey in pursuit of more sophisticated magic and swordsmanship. At the same time, Gori was still looking for his lost sword of light. The rumors about the imminent return of the "Golden Demon King" spread widely in the demon world, and a melee between humans and demons was inevitable.