Captain Kirk’s crew has stolen a cloaking device from the Romulans, but when they attempt to hold the Romulan Commander hostage, they find out just how dangerous she is.

When humanoids with powers to control the ship challenge the order of command, Kirk must maintain his authority and keep them firmly in line, all while calming the nerves of his anxious crew.

Spock and McCoy have traveled through time, but have lost the portal they need for their return. Time is running out and Captain Kirk hurries to bring them back to safety. For Spock, this means saying a difficult goodbye.