Source taken from Wikipedia.org
Gurren Lagann, known in Japan as Tengen Toppa Gurren Lagann, literally "Heaven-Piercing Gurren Lagann" is a Japanese mecha anime television series animated by Gainax and co-produced by Aniplex and Konami. It ran for twenty-seven episodes on Japan's TV Tokyo between April 1, 2007 and September 30, 2007. It is directed by Hiroyuki Imaishi, written by veteran playwright Kazuki Nakashima and has been in development since the participation of the famed animator in the Abenobashi mecha themed episodes by the same studio. The anime won several awards at the Tokyo International Anime Fair and the Animation Kobe and Japan Media Arts Festivals.
In the distant future, people build their homes and raise domestic animals in subterranean caverns called "pits." This way of life has persisted for hundreds of years, and yet, the people are still powerless against the earthquakes and cave-ins which occasionally devastate their villages. Jeeha is one such village.