Not long ago, mysterious structures known as Dungeons started appearing across the globe. Their origin and nature remain unknown, yet adventurers and military forces worldwide immediately took notice. Thousands ventured into these Dungeons, but to date, not a single explorer has come back. In a Parthevian port city, a young boy is on the verge of making his mark. Sinbad is good-natured, strong, and eager for adventure. A kind act leads him to meet Yunan, an enigmatic traveler whose frivolous demeanor masks immense power. Yunan instructs Sinbad to acquire the "power of the king" and change the world by conquering a Dungeon. The enthusiastic boy readily agrees, embarking on the grand adventure he had long desired. Set 15 years prior to the events of the original series, Magi: Sinbad no Bouken chronicles Sinbad's youth as a Dungeon conqueror. Along the journey, the aspiring adventurer and merchant must overcome numerous obstacles, but with the power of a king, anything is possible.