Eiji infiltrates a mysterious castle, encountering eccentric guests and an impending threat from outer space.

Eiji battles a colossal threat while facing doubts about his sister's fate and his own role in the fight.

Eiji's search for his sister intensifies as the team faces a new Zeravire threat, requiring Gravion's power.

Eiji's intense training pays off as a new ally emerges, but a formidable foe tests Gravion's limits.

As the team bonds, Leele's past trauma surfaces in a fierce Zeravire battle, testing their unity and resolve.

Eiji and Toga's day out turns chaotic as Zeravire attack, forcing an emergency recall to pilot Gravion.