The episode begins in the Barian World, where and other cloaked figures decide to take direct action to destroy the Astral World after their human pawns, Vetrix and Dr. Faker, failed.
Fender attacks Yuma's school and holds his friends hostage to lure him into a duel. Believing Astral is the target, Yuma leaves the Emperor's Key with Tori to protect him and faces Fender alone. Mechanical Debut: Chaos Xyz Evolution Yu-Gi-Oh! Zexal Second Episode 1
(Series Episode 74), titled " Attack of the Barians: Part 1 ," marks a major shift in the series' tone, introducing the Barian World as the central antagonist after the conclusion of the World Duel Carnival. This episode kicks off the "Barian Invasion" arc with higher stakes and the debut of the Chaos Xyz Evolution mechanic. Plot Summary: A New Threat Arrives The episode begins in the Barian World, where