Twelve episodes of Masami Obari refusing to be embarrassed about anything, and it works on you by episode three. This is the sequel that stops pretending Gravion was ever subtle: Klein Sandman bellowing combination orders from a mansion staffed by maids who double as your support crew, Eiji Shigure still chasing what happened to his sister instead of chasing glory, and Gran Kaiser slamming into place at the top of a stack of machines that has no business flying. The Zeravire come back, so Sol Gravion and the God Gravion upgrade come with them, all posed at those impossible Obari angles where the fists are bigger than the cockpit. The EFA building the Grand Trooper is the smartest thing the show does, because a rival super robot forces everyone to say out loud who they actually trust. You will yell the attack name. Alone. In your room.

The Zeravire seemed to have been halted after Gravion unleashed its ultimate attack, but the enemy suddenly strikes again. Earth Gult and its trump card, the super robot Gravion, must once more defend the world. Meanwhile, the Earth Federation Alliance works on a counterweapon of its own built around the Grand Trooper. As both groups hold back the Zeravire, they must safeguard humanity's future, face their own pasts and uncover the secrets behind the enemy. The result is a sci-fi mecha adventure with a comedic streak.