In the first sequel, "Star Trek Into Darkness", Uhura has been serving on the "Enterprise" for a year and is still romantically involved with Spock. She and Kirk have a good working relationship and share their frustrations with Spock's emotional unavailability (Uhura as his lover, Kirk as his best friend). Uhura is called upon several times to act as a field officer, attempting to use her fluency in Klingon to assist in the hunt for the fugitive John Harrison. She later contacts Spock Prime (at her Spock's request) to consult him over Harrison's identity, and at the climax of the film, helps Spock defeat and capture Harrison after a long chase and fierce hand-to-hand combat. In the second sequel, "Star Trek Beyond", her exceptional hearing, first referenced in the 2009 film, reveals the identity of the main antagonist. Spock and Uhura amicably discuss ending their relationship and have some tension over Spock's intention to leave Starfleet to help the Vulcan survivors, in the wake of the death of Spock Prime. Spock later instead chooses to remain in Starfleet, and begins to renew his relationship with Uhura.