The plot of Yu-Gi-Oh! Duel Monsters portrays the journey of the ancient Egyptian pharaoh's spirit as he sets out to uncover his forgotten identity. Yugi Mutou, the individual responsible for awakening the pharaoh's spirit, teams up with his comrades to engage in multiple skirmishes against individuals linked to the pharaoh's past. The pharaoh's possession of the Millennium Puzzle renders it a coveted object that many desire, hoping to harness its capabilities. The card game component of the show serves as its primary focus, while the theme of companionship persists as a critical aspect of the narrative.