"Burying the Past - Part 1", entitled "Exodia Necross" in the Japanese version, is the 120th episode of the Yu-Gi-Oh! television series. It first aired in Japan on August 27, 2002 and in the United States on April 3, 2004.
Seto Kaiba has one final confrontation with Gozaburo with the two dueling each other for control of KaibaCorp. Meanwhile, Noah, possessing Mokuba's body in the real world, intends to destroy his father's Virtual World Fortress with everyone trapped inside as payback for six years of abandonment and isolation.
Kaiba orders Gozaburo to shut down his Virtual World and release all the minds trapped here, but Gozaburo says that Kaiba must earn his freedom and challenges him to a Duel.
To remind his stepson of the painful moment he'd experienced when he dueled Yugi, who'd achieved the impossible by SummoningExodia in their first duel, Gozaburo reveals that he is using an Exodia Deck.
Ultimately, Gozaburo summons a monster called "Exodia Necross", who seems to be nearly as invincible as its "Forbidden One" counterpart; as long as the 5 pieces of Exodia remain in Gozaburo's Graveyard, "Exodia Necross" is immune to destruction by battle, as well as the effects of Trap or Magic cards that can affect or destroy it.
Meanwhile, Noah has escaped to the real world in Mokuba's body and sets into motion his plans to destroy the virtual fortress with his father's own satellite missiles, deleting every mind trapped in cyberspace, but he suddenly has a change of heart when he remembers the way Mokuba considered Noah his brother despite the way he had been treated. Noah rushes back to try to help everyone escape, but Yami Marik has destroyed the controls, leaving no way to override the satellite's attack.
Noah speaks to everyone in the virtual world, warning them the place will be destroyed and their minds will be lost if they do not escape.
Featured Duel: Seto Kaiba vs. Gozaburo Kaiba - Part 1