Star Trek: The Next Generation (1987)

S6E25 Timescape

Stardate: 46944.2. After attending a Federation conference, Captain Picard, Geordi, Troi, and Data return to discover the Enterprise trapped in a time loop. To make matters worse, they face a looming threat from a Romulan Warbird, also caught in the time freeze. As the crew navigates this bizarre situation, they must figure out how to break free from the temporal stasis and thwart the impending attack.