|This article is about a/an episode in Tensou Sentai Goseiger.|
Countdown! The Life of the Earth (カウントダウン！地球の命 Kauntodaun! Chikyū no Inochi) is the fifteenth episode of Tensou Sentai Goseiger. This episode features the final battle with the main forces of Warstar, the death of Mons Drake, and the (supposed) death of Buredoran.
When Mons Drake performs a final act which gives the Earth 24 hours before its end, the Goseiger must confront the leader of Warstar to save their planet before Earth is destroyed!
With Dereputa and Tāgeito dead, Mons Drake 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 Mons Drake 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 Mons Drake, Nozomu starts to lose hope as Alata tells him that it will all work out before the Gosei Angels head to Mons Drake's location. Though having troubles breathing, the Goseigers battle Mons Drake while Nozomu gets Yuuta and the others to continue their soccer practice. Unfazed by the Gosei Dynamic, Mons Drake 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 Mons Drake while Mystic Datas Hyper tries to stop the Indevader, both having zero success as Mons Drake removes the Headders from the fight. All seemed hopeless until the Goseigers summon all the Headders, disabling Mons Drake 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.
- Alata (アラタ Arata): Yudai Chiba (千葉 雄大 Chiba Yūdai)
- Eri (エリ): Rika Satoh (さとう 里香 Satō Rika)
- Agri (アグリ Aguri): Kyousuke Hamao (浜尾 京介 Hamao Kyōsuke)
- Moune (モネ Mone): Mikiho Niwa (にわ みきほ Niwa Mikiho)
- Hyde (ハイド Haido): Kento Ono (小野 健斗 Ono Kento)
- Nozomu Amachi (天知望 Amachi Nozomu): Sakuya Nakamura (中村 咲哉 Nakamura Sakuya)
- Professor Shuichiro Amachi (天知秀一郎 Amachi Shūichirō): Louis Yamada LIII (山田ルイ53世 Yamada Rui Gojūsan-sei)
- Datas (データス Dētasu, Voice): Kōki Miyata (宮田 幸季 Miyata Kōki)
- Great King Mons Drake (大王・惑星のモンス・ドレイク Daiō Wakusei no Monsu Doreiku, Voice): Shōzō Iizuka (飯塚 昭三 Iizuka Shōzō)
- Buredoran of the Comet (彗星のブレドラン Suisei no Buredoran, Voice): Nobuo Tobita (飛田 展男 Tobita Nobuo)
- Yuta: Yuta Komuro (小室優太 Komuro Yūta)
- Taichi: Takamasa Abe (阿部考将 Abe Takamasa)
- Kensuke: Amon Hoshino (星野亜門 Hoshino Amon)
- Gosei Red - Skick Sword, Gosei Dynamic, Gosei Dragon, Gosei Great, Mystic Brothers, Hyper Gosei Great, Victory Charge (Hyper Gosei Great), Memoryfly
- Gosei Pink - Skick Shot, Gosei Dynamic, Gosei Phoenix, Gosei Great, Hyper Gosei Great, Victory Charge (Hyper Gosei Great), Memoryfly
- Gosei Black - Gosei Dynamic, Gosei Snake, Gosei Great, Hyper Gosei Great, Victory Charge (Hyper Gosei Great), Memorybury
- Gosei Yellow - Gosei Dynamic, Gosei Tiger, Gosei Great, Hyper Gosei Great, Victory Charge (Hyper Gosei Great), Memorybury
- Gosei Blue - Presshower, Gosei Dynamic, Gosei Shark, Gosei Great, Hyper Gosei Great, Victory Charge (Hyper Gosei Great), Memorywash
- As part of Super Hero Time, this episode aired alongside Kamen Rider W episode 36, Beyond the R/Surpass Them All.
- This episode aired on the same day of the premiere of Super Sentai Versus Series Theater, featuring pt. 1 of Chouriki Sentai Ohranger: Ole vs. Kakuranger
Tensou Sentai Goseiger Volume 4 features episodes 13-16: Epic 13: Run! The Mystic Runner, Epic 14: Birth of the Ultimate Tag!, Epic 15: Countdown! The Life of the Earth, and Epic 16: Dynamic Alata.