A Fateful Encounter (運命の出逢い Unmei no Deai) is the first episode of Ultraman Mebius.
Ultraman Mebius is sent to Earth and takes up his human form. He meets with Ryu, when Dinozaur attacks. Does he have what it takes to be a defender of Earth?
Father of Ultra sends Mebius to Earth. While Mebius arrives a space monster, Dinozaur, appears for the first time in 25 years. Mirai meets, Ryu, saying the 5 Ultra Oaths but the latter is called of to deal with the monster. In the battle, all of Crew GUYS Japan is wiped out except Ryu's, who is ejected as the captain's plane hits Dinozaur. Mirai is briefly attacked by a mysterious woman, who vanishes.
Teppei, George, and Marina help Konomi to rescue some rabbits. Mirai runs upon them, and helps them. After they escape, he transforms, and manages to defeat the monster. Ryu yells him what kind of fight that was with all the damage Mebius didn't protected, and just like Ryu wasn't able to protect someone, and he cried.
Mirai joins the new Crew GUYS in the end.
- Mirai Hibino (ヒビノ・ミライ Hibino Mirai)/Ultraman Mebius (ウルトラマンメビウス Urutoraman Mebiusu Voice): Shunji Igarashi (五十嵐 隼士 Igarashi Shunji)
- Ryu Aihara (アイハラ・リュウ Aihara Ryū): Masaki Nishina (仁科 克基 Nishina Masaki)
- Marina Kazama (カザマ・マリナ Kazama Marina): Ai Saikawa (斉川 あい Saikawa Ai)
- George Ikaruga (イカルガ・ジョージ Ikaruga Jōji): Daisuke Watanabe (渡辺 大輔 Watanabe Daisuke)
- Konomi Amagai (アマガイ・コノミ Amagai Konomi): Misato Hirata (平田 弥里 Hirata Misato)
- Teppei Kuze (クゼ・テッペイ Kuze Teppei): Kenta Uchino (内野 謙太 Uchino Kenta)
- Shingo Sakomizu (サコミズ・シンゴ Sakomizu Shingo): Minoru Tanaka (田中 実 Tanaka Minoru)
- Aide Toriyama (トリヤマ補佐官 Toriyama Hosakan): Kenichi Ishii (石井 愃一 Ishii Kenichi)
- Secretary Aide Maru (マル補佐官秘書 Maru Hosakan Hisho): Yutaka Maido (まいど 豊 Maido Yutaka)
- Mystery Woman (謎の女 Nazo no Onna): Moeko Koyama (小山 萌子 Koyama Moeko)
- Ultraman Mebius Volume 1 features episodes 1-4.