It is the 24th century and the newly-commissioned Enterprise-E has been ordered the patrol the Romulan Neutral Zone. Captain Jean-Luc Picard has been ordered not to interfere in a battle between a Borg Cube and starships from the Federation. However, seeing the Federation is losing the battle, Picard ignores his orders and takes command of the fleet. With his knowledge of its weak spot, they destroy the Cube, but a Borg Sphere escapes and plots a course directly for Earth. The Enterprise chases the Sphere, enters a temporal vortex created by the Borg, and arrives in the 21st century. Their only chance of stopping the Borg from assimilating Earth is to make sure that Zefram Cochrane makes his famous first faster-than-light travel to the stars.