Yu-Gi-Oh! Duel Monsters - Season 1 Episode 151 An Unexpected Enemy It's time to duel!
Overview: On the way to Industrial Illusions, Yugi and friends are ambushed by a band of motorcycle thugs - until their favorite friend soars to the rescue on the wings of her Harpie Lady! Mai’s back to help Yugi take down Dartz and save the world from annihilation... or is a topsy-turvy twist in the works?