Captain Kirk, acting tense and irrational, orders the Enterprise straight into the Neutral Zone for no reason. Romulan warships (identical to Klingon ships due to sharing of technology) capture the Enterprise, and Kirk and Spock beam aboard the Romulan flagship. When Spock admits that Kirk may be unfit to command, the Captain lunges at Spock - and receives a \"Vulcan death grip.\" Kirk, actually alive, is beamed back to the Enterprise and reveals to McCoy and Scott that their actual mission is to steal one of the Romulans' cloaking devices and escape intact.
