As Yuma celebrates reaching the finals, he realises he has misplaced his deck within Heartland. As Yuma, Tori, and Bronk sneak into Heartland through the trash system, Vetrix manages to capture Shark and use his powers to brainwash him. As they reach Heartland Tower, Astral informs Yuma that Hart is somewhere in the building. Upon coming up against a Security Bot who poses a puzzle based challenge to them, Tori and Bronk take it on whilst Yuma and Astral push ahead. As Yuma and Astral go to see Hart, who is still unconscious from his encounter with Vetrix, Hart brings them into the world in his mind, asking them to help Kite. Just then, Dr. Faker appears before them, revealing his intention to gather Numbers in order to obtain a special power, before sending Yuma away, returning his deck. As the day of the WDC Semi-Finals come, Yuma is set to face off against Shark.