Here's a breakdown of the events:
Jaden and Yubel's Duel:
* The duel takes place in the "Dimension of Chaos", a realm created by Yubel's power.
* Yubel has taken control of Jesse Anderson, using him as a vessel.
* Jaden initially struggles against Yubel's overwhelming power, but he eventually remembers the true meaning of "friendship" and the bonds he's formed with his friends.
* This newfound resolve fuels Jaden's spirit and allows him to summon "Elemental HERO Neos" in its ultimate form, "Elemental HERO The Shining".
* Jaden unleashes a powerful attack, shattering Yubel's control over Jesse.
* Yubel, weakened and desperate, tries to merge with Jaden, but he rejects her.
The Final Blow:
* Jaden summons the power of "Elemental HERO Neos" and "Elemental HERO Sparkman" to perform a powerful attack, completely destroying Yubel.
* With Yubel defeated, the "Dimension of Chaos" collapses and Jaden and his friends are returned to the real world.
Resolution:
* Jesse Anderson is freed from Yubel's control, though he still carries some lingering memories of his time with the entity.
* Jaden and his friends celebrate their victory and reflect on the journey they've shared.
* The episode ends with Jaden graduating from Duel Academy and looking forward to a bright future.
The finale concludes the main storyline of Yu-Gi-Oh! GX, leaving a sense of closure while simultaneously offering a hopeful outlook for Jaden and his friends.