Thymilph, one of the Four Divine Generals of the mysterious Spiral King, arrives to support Viral's Enki, with the massive mobile Gunmen fortress, the Dai-Ganzan. Kamina and Simon pilot the Gurren-Lagann against seemingly overwhelming odds.

At last, Team Dai-Gurren arrives at the outskirts of Teppelin, but before aiming to the city, they must face a combined full-scale attack of Cytomander and Guame's forces.

Guided by Simon and Nia's feelings for each other, Team Dai-Gurren break through dimensions in search for the Anti-Spirals' homeworld. But after falling into the enemy's trap, they end up losing some of their most precious members, due to its vicious offensive.