Star Trek: First Contact Reviews
What is “Star Trek: First Contact”?
The eighth Star Trek movie, and the second to feature the Next Generation cast, is one of the most well-received in the franchise.
To prevent the cybernetic Borg from changing Earth's history, the crew of the Enterprise-E follows a Borg cube back to the 21st century, to a point just days before humanity's first faster-than-light flight. The story then splits between setting the legendary Zefram Cochrane (James Cromwell) back on track with his flight, and battling the Borg on-board the Enterprise itself.
Last edited by fnoo. [Click here to edit.]

Have you seen films 2-4? That trilogy, plus First Contact, is pretty much all you need.