As humanity begins migrating beyond Earth, a new Ultraman named Dyna arrives and bonds with defense organization GUTS' newest recruit, Shin Asuka, to protect a colony on Mars.

When he returns to Earth to attend the wedding of his friend in Saipan, Musashi meets a beautiful girl named Shau who claims to come from the bottom of the sea. Just then, Monster Scorpis reappears in the sky above the island and Musashi faces the monster in order to protect the girl. What is the girl's true form? And what is the strange shadowy form that follows the monster Scorpis?

Ultraman Saga opens with a powerful apocalyptic vision of Tokyo, buildings destroyed and the city seemingly devoid of life. We are soon introduced to the Earth Defense Force (EDF), Team U (played by members of the female idol group AKB48). They and a group of young children and the last survivors on planet Earth after the world was invaded by the evil Alien Bat, the rest of the human population having been abducted.

官方网站: 吸收怪獸鴉王出現了，在大地上肆意破壞！正在巡邏的飛鳥就變身成超人帝拿跟怪獸打起來，可是其絕招卻被怪獸的三隻角吸收掉了。像在嘲笑超人的失敗似的，怪獸與光線一起消失了。 阿響隊長之下的各隊員召開了緊急會議。推測怪獸的出現應該是與Miji星球人有關，但這卻怪錯好人了。不過，那個真正的侵略者∼機械魔女（人形機械人）卻在暗地里進行著其侵略地球的大計。終於，怪獸鴉王與能量鎖合體變成了合體侵略兵器獸溫哲。飛鳥再次變身成超人帝拿展開戰鬥，但發揮不到絕招的帝拿能否取勝？那個怪獸溫哲是否有弱點？ 另一方面，羽次郎帶着侵略警告回到地球，卻被Miji星球人抓獲。得知有新侵略者搶先過他們的Miji星球人十分氣氛，最后居然向Super Gust提出要協助打敗溫哲……