Shine! The Five Ultra Brothers (輝け ウルトラ五兄弟 Kagayake Urutora Go Kyoudai) is the first episode of Ultraman Ace. It features a special appearance of the previous four Ultra Brothers. It also marks the second appearance of Zoffy since the final episode of the Original Ultraman Series.
Impressed by the sacrifices of Seiji Hokuto and Yuko Minami by protecting the people during an attack of Verokron who was created by Dimension Man Yapool, the 5 Ultra Brothers gave the two humans lives, and send their new member Ultraman Ace to be their human host to fight off a age of new monsters know as Terrible-Monsters.
In 1972, sometime after the second age of monsters had ended. A new threat has arrived in the form of the Yapool, a race of interdimensional beings. They bring with them genetically, altered cyborgian creations called Terrible-Monster, or Super Beasts; more powerful lifeforms unlike any other seen before. The first such creature leading the attack is Verokron. Sent to destroy Fukuyama, the Earth Defense Force is powerless to stop the monster's advance. Seiji Hokuto, a bakery delivery man, and a nurse named Yuko Minami are killed in the destruction while trying to help fleeing citizens. Ultraman Ace, accompanied by four other Ultra Brothers, appears and revives the two bestowing upon them Ultra Rings that, when shining, allows them to transform into Ultraman Ace. Hokuto and Minami become members of TAC (Terrible-monster Attacking Crew), a Self Defense Force funded by thr global combat organization tasked with battling the Yapoolian threat and their army of inter-dimensional monstrosities
Verokron is seen again with new missiles used by it. TAC weakens the beast with Seij and Yuko being told by Ace about the Ultra Rings. Then as Verokron destroys Seij's plane, Seij and Minami turn into Ultraman Ace. Ace is nearly defeated by Velekron but Ace uses the Metalium Beam to finish Verokron. The age of Yapool and the Terrible-Monster had begun.
- Seiji Hokuto (北斗星司 Hokuto Seiji): Keiji Takamine (高峰 圭二 Takamine Keiji)
- Yuko Minami (南夕子 Minami Yūko): Mitsuko Hoshi (星光子 Hoshi Mitsuko)
- Dan Umezu (梅酢ダン Umezu Dan): Umezu Akinori (梅酢秋則 Akinori Umezu)
- Goro Ryu (竜五 郎 Ryū Goro): Tetsurō Sagawa (瑳川哲朗 Sagawa Tetsurō)
- Ichiro Yamanaka (山中一郎 Yamanaka Ichiro): Okita Shunichi (沖田駿一 Shunichi Okita)
- Tsutomu Konno (今野勉 Konno Tsutomu): Masaaki Yamamoto (山本正明 Yamamoto Masaaki)
- Noriko Mikawa (美川 のり子 Mikawa Noriko): Keiko Nishi (西恵子 Nishi Keiko)
- Kozo Yoshimura (吉村公三 Yoshimura Kozo): Koyo Sano (佐野光洋 Sano Koyo)
- Kaji Yoichi (梶洋一 Yoichi Kaji): Katsumi Nakaiyama (中山 勝己 Nakaiyama Katsumi)
- Ultraman Ace (ウルトラマンエース Urutoraman Ēsu Voice): Gorō Naya (納谷悟朗 Naya Gorō)
- Yapool (ヤープル Yapurū Voice): Hirofumi Takada (高田裕史 Takada Hirofumi)
- Narrator (ナレーター Nareta): Shin Kishida (岸田森 Kishida Shin)
- Ultraman Ace (ウルトラマンエース Urutoraman Ēsu): Tadashi Nakanishi (中西正 Nakanishi Tadashi)
- Returning Ultraman (帰ってきたウルトラマン Kaettekita Urutoraman): Eiichi Kikuchi (菊池栄一 Kikuchi Eiichi)
- Verokron (ベロクロン Berokuron): Toru Kawai (河合 徹 Kawai Tōru)
- Ultraman Ace Volume 1 features episodes 1-4.
- With a rating of 28.8%, this was the highest rated episode of Ultraman Ace.
- This episode features the return of Ultraman Jack immediately after his finale and the return of Zoffy after five years since the finale of Ultraman.