I Saw the Phantom of a Heavenly Woman is the twenty-first episode of Ultraman Ace.
After having a dream of a beautiful woman in a rainbow sky, Captain Ryu wakes up to find a woman at his door begging for a job. He refuses her, and she finds another man, Shinichi, who accepts her offer. That day, TAC picks up odd behavior of cosmic rays. Seiji and Yuko go to investigate and find the epicenter, Shinichi's house.
- Ultraman Ace Volume 6 features episodes 21-24.