Yu-Gi-Oh! Duel Monsters: Season 1, Episode 188

1 - 188: The Illusionary Ancient Dragon

Mysteries abound! How does Mask the Rock know all of Jonouchi’s strategies? How can Jonouchi stop the masked master when he gathers his ancient cards to unleash the fiercest monster from the great past? But the biggest mystery is: How can Jonouchi not know who Mask the Rock is?