Epic 15: Countdown! The Life of the Earth

'''Countdown! The Life of the Earth''' is the fifteenth episode of Tensou Sentai Goseiger.

Plot
With Dereputa and Tāgeito dead, Month Doreiku decides put an end to the Gosei Angels' interference once and for all by removing all the oxygen from the planet before telling the residents of Earth they have a day until they are exterminated. After Datas pinpoints his location, the Gosei Angels confront Month Doreiku and unable to defeat him he spares them to live long enough to see the end of the world. Overhearing them as they learn about Month Doreiku, Nozomu starts to lose hope as Alata tells him that it will all work out before the Gosei Angel head to Month Doreiku's location. Though having troubles breathing, the Goseigers battle Month Doreiku while Nozomu gets Yuuta and the others to continue their soccer practice. Unfazed by the Gosei Dynamic, Month Doreiku eats a Bibi Bug to assume a giant form and reveals the rest of his plan: Having Buredoran pilot the Indevader, storing Earth's oxygen in it, on a direct course with the planet to cause an massive explosion. The Goseigers form Gosei Great to fight Month Doreiku while Mystic Datas Hyper tries to stop the Indevader, both having zero success as Month Doreiku removes the Headders from the fight. All seemed hopeless until the Goseigers summon all the Headders, disabling Month Doreiku as Hyper Gosei Great is formed and destroy both him and the Indevader in one hit. Soon after, with Earth's oxygen level restored and everyone's memory of the catastrophe erased, the Gosei Angels return home.