Yu-Gi-Oh! - Episode 040

Aftermath, or King of Duelists in the Japanese version, is the 40th episode in season one of the second series of Yu-Gi-Oh! There are no duels in this episode, which centers around Pegasus' childhood and teenage life and Yugi meeting Shadi, who discovers Yugi's secret. Its original airdate was on October 5, 2002 on Kids WB!

Summary
Pegasus is in his private tower releasing the souls of Solomon Muto and the Kaiba brothers. Just then, Yami Bakura arrives and challenges him to a shadow game using their Millennium Items. Bakura easily wins and takes Pegasus' Millennium Eye. Yugi and the gang arrive to see Pegasus being carried away by his guards. They enter the tower and finds Pegasus' diary. Tea reads from it. It explains as a teenager, how he met a girl named Cecelia. They were true lovers, but just as they were about to be married, Cecelia got sick and died. Pegasus travels all over the world trying to get her back. He wounds up in Egypt, where he meets Shadi. He gives him the Millennium Eye. Pegasus gets the idea that using the holographic technology of KaibaCorp along with the power of the Millennium Items could bring Cecelia back to life, and this was what Duelist Kingdom was about. As the group leaves, Shadi confronts Yugi. He uses his Millennium Key to enter Yugi's mind. To his surprise, he finds two chambers, one for Yugi, and the other for Yami. The latter is giant maze filled with trap doors. Shadi enters through several of them before Yugi saves him. In one of them, they encounter the Dark Magician. Shadi plans to use the Blue-Eyes White Dragon to destroy it, but Yugi talks him out and manages to convince the Dark Magician to let him go. Shadi leaves Yugi's mind, believing he is the one that will save the world from chaos.