Yapool, an ancient interdimensional race of beings tries to conquer the Planet Earth with his army of monsters, called Terrible-Monsters. The newest member of the Ultra Brothers, Ultraman Ace, arrives on Earth to aid humanity in the battle against Yapool. Touched by the sacrifices of Seiji Hokuto and Yuko Minami, he revives them and grants them the Ultra Rings, which allows them to transform into Ultraman Ace in times of need.
| Title | Time | |
|---|---|---|
| 1 | Shine! The Five Ultra Brothers | 1972-04-07 |
| 2 | Beyond the Giant Choju | 1972-04-14 |
| 3 | Burn! Choju Hell | 1972-04-21 |
| 4 | 30,000 Year Choju Appears | 1972-04-28 |
| 5 | Giant Ant Chouju vs. Ultra Brothers | 1972-05-05 |
| 6 | Pursue the Mystery of the Transformation Chouju | 1972-05-12 |
| 7 | Kaiju vs. Choju vs. Alien | 1972-05-19 |
| 8 | Life of the Sun, Life of Ace | 1972-05-26 |
| 9 | 10,000 Choju! Surprise Attack Plan | 1972-06-02 |
| 10 | Decisive Battle! Ace vs. Hideki Goh | 1972-06-09 |
| 11 | The Choju is Ten Women? | 1972-06-16 |
| 12 | The Red Flower of Cactus Hell | 1972-06-23 |
| 13 | Execution! The Five Ultra Brothers | 1972-06-30 |
| 14 | The Five Stars that Scattered Throughout the Galaxy | 1972-07-07 |
| 15 | Curse of the Black Crab | 1972-07-14 |
| 16 | Ghost Story! Cow God Man | 1972-07-21 |
| 17 | Ghost Story! The She-Devil of Firefly Field | 1972-07-28 |
| 18 | Lend Me the Pigeon | 1972-08-04 |
| 19 | Mystery of the Kappa's Residence | 1972-08-11 |
| 20 | The Star of Youth, the Star of a Couple | 1972-08-18 |
| 21 | I Saw the Phantom of a Heavenly Woman | 1972-08-25 |
| 22 | Yapool, Demon of Revenge | 1972-09-01 |
| 23 | Reversal! Zoffy Now Arrives | 1972-09-08 |
| 24 | Look! A Giant Transformation in the Middle of the Night | 1972-09-15 |
| 25 | The Pyramid Is a Choju's Nest! | 1972-09-22 |
| 26 | Total Annihilation! The Five Ultra Brothers | 1972-09-29 |
| 27 | Miracle! The Father of Ultra | 1972-10-06 |
| 28 | Farewell Yuko, Sister of the Moon | 1972-10-13 |
| 29 | The Sixth Ultra Brother | 1972-10-20 |
| 30 | The Ultra Star That Even You Can See | 1972-10-27 |
| 31 | From Seven to the Hand of Ace | 1972-11-03 |
| 32 | With a Prayer upon the Ultra Star | 1972-11-10 |
| 33 | Shoot That Hot-Air Balloon | 1972-11-17 |
| 34 | A Choju Dances on a Sea of Rainbow | 1972-11-24 |
| 35 | A Gift from Zoffy | 1972-12-01 |
| 36 | This Choju has 10,000 Phones? | 1972-12-08 |
| 37 | The Star of Friendship Forever | 1972-12-15 |
| 38 | Resurrection! The Father of Ultra | 1972-12-22 |
| 39 | The Life of Seven! The Life of Ace! | 1972-12-29 |
| 40 | Give Back the Panda! | 1973-01-05 |
| 41 | Ghost Story! Lion Drum | 1973-01-12 |
| 42 | Mystery! The Resurrection of the Monster Woo | 1973-01-19 |
| 43 | Ghost Story! The Cry of the Abominable Snowman | 1973-01-26 |
| 44 | Setsubun Ghost Story! The Shining Bean | 1973-02-02 |
| 45 | Big Pinch! Save Ace! | 1973-02-09 |
| 46 | Ride Beyond the Time Machine | 1973-02-16 |
| 47 | Curse of the Salamander | 1973-02-23 |
| 48 | The Revenge of Verokron | 1973-03-02 |
| 49 | The Flying Jellyfish | 1973-03-09 |
| 50 | Mass Chaos in Tokyo! Traffic Signals Gone Haywire | 1973-03-16 |
| 51 | Life-Sucking Sound | 1973-03-23 |
| 52 | Tomorrow's Ace Is You! | 1973-03-30 |
