"Mirror Knight Pegasus" complies and backs off before striking Yami Yugi. Yami Yugi is left wondering what Pegasus could have possibly meant by "dissolving the seal of the 'Legendary Dragons' while he ponders that he included the "Nameless Card" in question within his Deck.
Kaiba admits that they, Mokuba and he experienced the 'Dark' of the heart which Dartz speaks about. They've overtaken it and come this far. They have the Light which helps build the future. He then points at the Mirror Knight Tokens and claims that, if they're True Duelist, they won't regret vanishing here.
Indeed, a shower of rainbow-colored thin energy beams bombards Dartz's Field. Yami Yugi, horrified, calls out to Yugi, who reassures him that this is alright. Pegasus looks at Kaiba and thanks him. "Orichalcos Kyutora" Negates all Battle Damage before it is Destroyed.
However, "Kyutora" starts to shine in a weird manner. Dartz commands for it to display its true form. "Kyutora" blows up and a gigantic Dogu-like Monster emerges in its place!
"A monster born from your hatred"
This new monster is revealed to be the true "evolved form" of "Kyutora": "Orichalcos Shunoros"!
Both of them are unable to be Destroyed unless "Shunoros" were to be Destroyed first. However, since "Shunoros" is on the back row, normal Attacks won't reach it. Both arms are, respectively, its "Ultimate Sword" and its "Ultimate Shield".
By using it, "Shunoros" slices up "Mirror Force Dragon" and Kaiba is defeated but not before he uses a Trap of his own Wish of Final Effort to transfer his Monster's ATK to Yami Yugi's LP.
Kaiba's soul is seized and storms begin appearing all over the world. Dartz makes a strange 'eye' show up and it uses some kind of power to knock out Yami Yugi's friends.
The end of all things
Once alone, Dartz tells Yami Yugi: he's the reason why he's chosen to destroy the world. All of the reasons lay on the fact that Yami Yugi has revived after 3,000 years.
Yami Yugi defends himself: he's lost his memories. Dartz merely uses his magic to show Yami a vision of Ancient Egypt: Yami Yugi, as the "Nameless Pharaoh", is inside of a royal palace and facing a strange serpent-like creature. He Summons "Obelisk the Tormentor" and defeats it.
Dartz narrates: back then, the seal of the Duel Monsters' world was dissolved and people were once again stained by the 'Dark' in their hearts.
Another nighttime vision shows the same creature (which seems to have changed) and an unidentified rider fleeing from the palace soon to be followed by the Pharaoh, riding a horse, and "Slifer the Sky Dragon".
Dartz happened to be there, wearing a black tunic and hood. He glanced at the Pharaoh as he rode away. The vision switches to display a trail of destruction left behind. He explains that the ones wielding the 'Dark' fought and destroyed each other.
Another vision switches to present - day time: Yugi is seen completing the Millennium Puzzle for the first time and Yami Yugi's soul was revived.
Dartz then questions Yami Yugi why he had to be resurrected after such a long time. He tells him that there's just one answer: Yami Yugi himself, as a repulsing King, will end humanity's history! Humanity's history shall conclude once Yami Yugi is sacrificed to the Oreichalcos God, he adds.
Yami Yugi has 3500 Life Points remaining and controls "Big Shield Gardna" (100/2600) in Defense Position and two set cards.
Kaiba has 600 Life Points remaining and controls "Different Dimension Dragon" (1400/1500) in Defense Position and two set cards.
Dartz has 15500 Life Points remaining and controls "Orichalcos Kyutora" (1000/500) in Defense Position and four "Mirror Knight Tokens" (0/0) and "Orichalcos Malevolence" (2000/1000) in Attack Position and "Orichalcos Tritos".
"Orichalcos Malevolence" attacks "Different Dimension Dragon". Kaiba activates his face-down "Shrink" to halve the ATK of "Orichalcos Malevolence" until the End Phase, but Dartz activates the final effect of "Orichalcos Tritos" to negate and destroy "Shrink" (as it targets of Dartz's monsters).
Yami Yugi activates his face-down "Ambush Shield" to Tribute "Big Shield Gardna" and increase the ATK of "Different Dimension Dragon" by the DEF of "Big Shield Gardna" ("Different Dimension Dragon": 1400 → 4000/1500). "Different Dimension Dragon" destroys Dartz's "Orichalcos Malevolence", but Dartz receives no Battle Damage due to the effect of "Orichalcos Kyutora". The four "Mirror Knight Tokens" attack Yami Yugi directly (Yami Yugi 3500 → 3000 → 2500 → 2000 → 1500). Dartz then Sets a Card. On Dartz's End Phase, the effect of "Ambush Shield" expires ("Different Dimension Dragon": 4000 → 1400/1500)
"Mirror Force Dragon" attacks "Mirror Knight Pegasus". The effect of "Mirror Knight Pegasus" activates ("Mirror Knight Pegasus": 500 → 2800/0). Dartz then destroys the Shield Counter on "Mirror Knight Pegasus" to prevent his own destruction. The effect of "Mirror Force Dragon" then activates, inflicting Battle Damage equal to the difference between the ATK of "Mirror Force Dragon" and the total ATK of his monsters that had less ATK than "Mirror Force Dragon" at the start of the Damage Step. Due to the effect of "Orichalcos Kyutora", Dartz takes no Battle Damage. After that happens, the last effect of "Mirror Force Dragon" activates, destroying all of Dartz's monsters without applying damage calculation. (At this point, Yami Yugi and Kaiba find out that the souls of their friends were released upon being destroyed in Mirror Knight form and are now safe.)
As a monster he controlled was destroyed, Dartz activates his face-down "Martyr Curse" to force "Mirror Force Dragon" and "Orichalcos Shunoros" to battle. Due to the last effect of "Martyr Curse", Seto cannot activate the effect of "Mirror Force Dragon". "Orichalcos Shunoros" destroys "Mirror Force Dragon" (Seto 600 → 0). Since Seto has lost the Duel, his "Different Dimension Dragon" is destroyed. The third effect of "Orichalcos Shunoros" then activates, decreasing its ATK and DEF by the ATK of the monster it just battled ("Orichalcos Shunoros": 20000 → 17200/19500 → 16700). Before his soul is taken away, Seto activates his face-down "Wish of Final Effort" to increase Yami Yugi's Life Points by the ATK of "Mirror Force Dragon" (Yami Yugi 1500 → 4300).
When Kaiba destroyed the "Mirror Knight Tokens" in the original, he stated if they were True Duelists, they would have no problem allowing themselves to be destroyed to save the world. In the English dub, with his typical skepticism personality, he simply stated Dartz manipulated the holograms to look like Yugi, Mai, Joey, and Pegasus.
A shot of Kaiba's souless body being slammed against the barrier created by the Seal and sparking when his body collides as he is thrown by Dartz is removed from the dub.
The following cards appeared in this episode. Cards in italics debuted here.