Captain Jean-Luc Picard and the crew of the Enterprise-D find themselves at odds with the renegade scientist Soran who is destroying entire star systems. Only one man can help Picard stop Soran's scheme...and he's been dead for seventy-eight years.

The Borg, a relentless race of cyborgs, are on a direct course for Earth. Violating orders to stay away from the battle, Captain Picard and the crew of the newly-commissioned USS Enterprise E pursue the Borg back in time to prevent the invaders from changing Federation history and assimilating the galaxy.