Yuma, Astral, Tori, Shark, Kite, and the introduction/reappearance of various WDC finalists.
This episode takes place on the eve of the World Duel Carnival (WDC) finals in Heartland City. Yu-Gi-Oh! Zexal Second Episode 50
A massive invitation-only party is held for the 23 finalists of the WDC. Yuma Tsukumo is excited to attend, but his friends—who aren't finalists—initially feel left out until Flip finds a way to sneak everyone in. Yuma Tsukumo is excited to attend, but his
The celebration is interrupted when a group of "duelists" led by a man named Nelson Andrews (who plays the character "ESPer Robin") causes a scene. Yuma eventually faces off against a mysterious challenger while the tension for the upcoming finals builds. While Yuma is down, his allies step up
While Yuma is down, his allies step up. Specifically, Kaito (Kite) Tenjo arrives to face the Barian Emperors, standing as the "single blue shadow" protecting his friends.