Yu-Gi-Oh! Duel Monsters - Season 1 Episode 155 The Challenge It's time to duel!
Overview: Professor Hopkins has discovered startling connections between the world’s chaotic conundrums, the Orichalcos stones and an ancient lost civilization! However, before he can reveal his findings to Yugi, he’s kidnapped by Rafael! Yugi’s on the trail, but is this an elaborate plan to trap the Pharaoh?