After the destruction of the Twelve Colonies of Mankind, the last major fighter carrier leads a makeshift fugitive fleet in a desperate search for the legendary planet Earth. This film is adapted from a television series that aired on ABC from September 17, 1978, to August 17, 1980. The first and fifth episodes of the series were edited into this theatrical feature film. Taken together, the two episodes ran 148 minutes, without commercials, while the film runs 125 minutes.

It is nearly ten years after Voyager’s return from the Delta Quadrant, and the Federation is in a crisis. The Federation’s main suppliers of dilithium crystals are disappearing. Space and time have folded around several planets, effectively isolating them from any contact with outside worlds. And this phenomenon is not natural – someone or something is causing this to happen. This necessitates drastic measures; some of which are outside the Federation’s normal jurisdiction. For this, Admiral Pavel Chekov, head of Starfleet Intelligence, turns to Commander Tuvok, Voyager’s former security officer and current head of the newly reorganized Section 31. Tuvok must put together a new covert, renegade crew – mostly outcasts and rogues – even criminals. This new crew is tasked with finding out what is causing the folding of time and space, and stopping it – at all costs.