Continuing to the Gunmen rallying point, Team Gurren finds themselves on a strange hot springs getaway.

During the following seven years, a new civilization rises and prospers under Simon's leadership. However, these peaceful times come to end when the threat mentioned in Lordgenome's last words starts to reveal itself.

As Simon arrives in prison, he unexpectedly meets Viral, who comments on how far he has fallen. Meanwhile, the truth about Rossiu's emergency plan and the consequences for those left behind on Earth are revealed.