Nur mit einem Sieg über Roman, ist Yusei in der Lage die finsteren Mächte im Inneren von Roman zu versiegeln. Unterdessen treffen Crow und Rex Goodwin im Reaktor aufeinander. Goodwin erläutert seine Beweggründe zum Zusammensammeln der vier Auserwählten.
After bringing Yusei's life points down to 50, Roman begins to tell him of what happened 17 years ago between him, Rex and Yusei's father. They were working on the Original Energy Reactor, but Professor Fudo wanted to stop the project when it started to look unstable. Roman had decided to travel to the Nazca lines, where he encountered a mysterious person, claiming to be from Yliaster, who knows about Roman's birthmark. The mysterious man convinces Roman to look into the light coming from the reactor, where he is struck by dark energy and is shown the history of the Earthbound Immortals and the mighty powerful Crimson Dragon. Meanwhile, Crow finds Rex, who explains that Professor Fudo was betrayed by Roman. He shows off four Dragon cards, but Professor Fudo manages to escape with three of them, but got severely injured in the process and entrusts the cards to Rex. Rex goes to confront Roman, who had severed his birthmark arm and given it to Rex Goodwin, telling him that he should unite the Signers and then come back to defeat him. He then overloads the Original Ener-D Reactor, after causing it rotate backwards, causing Zero Reverse to occur, and transforming Roman Goodwin into a Dark Signer, and results in the separation of Satellite from New Domino City. This kills Professor Fudo and Yusei's mother in the process, but not before he was able to get the infant Yusei to safety.
Back in the present, Yusei manages to bring out Stardust Dragon, and after a series of counter traps from both sides, Yusei manages to defeat Roman. However, Roman warns him that if the signers don't seal all of the four control towers on time, then the King of the Netherworld would resurrect at sunset, and then he self-destructs himself the bridge, causing it to collapse, which results in Yusei to falling into the Ener-D pool.
Roman révèle à Yusei, Trudge, Lua et Luca que c'est lui le cinquième Pactisant, ce qui choque tout le monde. Il révèle aussi comment le cinquième Pactisant s'est corrompu lui-même et est devenu un Pactisant des Ténèbres.
旧モーメントへやってきた遊星達。そこで待ち受けていたのは、予想通り、ルドガーであった。早速、デュエルを開始する遊星とルドガー。闘いの中で、ルドガーは17年前の事実を語り始める。それによれば、遊星の父である不動博士は、モーメントを完成させるのに不可欠な新粒子"遊星粒子"を発見し、その助手をしていたのがルドガーとレクスだったというのだ。はたして、ルドガーの語る悲劇の内容とは・・・。
