Vector challenges Yuma in a high-stakes Sphere Field duel. He quickly summons Number 66: Master Key Beetle and uses "Magical Tomb" to seal Yuma’s "Rank-Up-Magic Limited Barian's Force".
This pivotal episode shifts the series into a darker gear as the Barian threat intensifies.
Ray Shadows reveals he is a member of the "Barian Cosmic Crime Unit" and gives Yuma powerful new Barian cards to use against his enemies, insisting they keep this a secret from Astral.
Using the cards Ray gave him, Yuma summons Number C39: Utopia Ray V and equips it with V Salamander to wipe out Vector's field and win the duel.