Ride Beyond the Time Machine (タイムマシンを乗り越えろ! Taimu Mashin o Norikoero!) is the forty-sixth episode of Ultraman Ace.
While fruitlessly chasing a terrible-monster that keeps appearing and disappearing, the TAC Space goes missing, taking Mikawa and Yoshimura with it. As the rest of the TAC team search for their comrades, Captain Ryu manages to connect with Yoshimura, who tells him that he and Mikawa have been sent to the past by the terrible-monster.
- Ultraman Ace Volume 12 features episodes 45-48.