The Terrible-Monster Is Ten Women? is the eleventh episode of Ultraman Ace.
The terrible-monster, Unitang, attacks and destroys TAC's No. 3 Radar Base. TAC manages to drive it away. Later, Seiji and Yuko are tasked with bringing an irreplaceable part to the No. 3 Radar Base so it can be repaired. But when they return the part has been destroyed. Seiji's suspicions are correct; the women are the monster.
- Ultraman Ace Volume 3 features episodes 9-12.