Dark Frontier

"Dark Frontier" is a feature length episode of Star Trek: Voyager, the 15th and 16th episodes of the fifth season. This episode originally aired as a feature-length episode that was later broken up into two parts for reruns in syndication.

Plot

Part I

After Voyager manages to destroy a Borg probe, Seven of Nine finds data nodes filled with tactical information among the debris. With it they locate a heavily damaged sphere nearby, and Janeway decides to plan a "heist" — invade the Borg vessel while its defenses are down and take its transwarp coil, which will shave about 20 years off Voyager's journey. The crew will create a diversion, then send an away team in to steal the technology. Hoping to find information that will give them a tactical edge, Janeway assigns Seven to study her parents' field notes that Voyager recovered from the USS Raven.

Once she begins studying her parents' logs, Seven remembers their encounters with the Borg. She was only a small girl at the time, but she vividly recalls their fascination with the mysterious Collective. Meanwhile, Voyager catches up with the sphere. The sphere's shields and transwarp drive will be off-line for the next 72 hours, allowing the crew only a short time to plan and execute the mission.