Spock/Starfleet/James T. Kirk/Year Five

In early 2269, Spock and Kirk took a new medicine that could cure mental illness to a Federation mental facility. However, under the leadership of former Starfleet captain Garth of Izar, inmates had taken over the facility. Garth captured Spock and Kirk, putting their lives in danger. Spock escaped and found Kirk but Garth, who had developed shapeshifting powers, had assumed Kirk's identity. Spock determined the real Kirk from the impostor and subdued Garth, thus giving him medication that helped his mental illness. ()
In the same year, Spock was part of a landing party that found a Human named Flint. He found masterpiece paintings and original classical music. Flint admitted that he had been Johannes Brahms and Leonardo da Vinci on Earth, and that he was an immortal being. ()
Spock helped Kirk negotiate a peace treaty between two societies on Ardana. He also became attracted to Droxine, the daughter of Plasus, the ruler of Ardana; he referred to her as a work of art and even discussed pon farr with her. However, nothing ever came out of the relationship. ()
The Excalbians forced Spock and Kirk into a battle between good and evil to study Human concepts. The aliens created images of people who possessed "good" qualities, such as Abraham Lincoln and Surak, against "bad" people such as Colonel Phillip Green and Kahless. ()
Spock, Kirk, and McCoy entered a time portal, and were stuck in different past eras of Sarpeidon which was about to be destroyed by an exploding sun. Spock and McCoy traveled into the planet's ice age where they met Zarabeth, who had been sent there as punishment. Even though McCoy was dying from the cold, Spock wished to remain with the woman with whom he had fallen in love since, in this time period, he had emotions. Eventually, he discovered the portal door and saved McCoy. () 
After Janice Lester transferred her consciousness into Kirk's body and his consciousness into her body, she attempted to kill Kirk and assume his captaincy. However, Spock managed to expose her and helped to re-transfer Kirk's consciousness into his body. ()
Spock joined a landing party that beamed down to inspect the second planet of the Taurean system. There, he became affected by the glandular secretion of the female members of Theela's species who inhabited there, who were known for controlling the male mind. This drained Spock of his "life force," causing him to age at a rate of ten years per day. Spock escaped the females of the planet and contacted the Enterprise. An all-female security detachment led by Lieutenant Nyota Uhura eventually recovered him and the landing party. By using their molecular pattern stored in the transporter system, Spock and the others were returned to their previous ages. ()
On a mission to Phylos, Spock was captured by Stavos Keniclius who planned to clone him and make an army of Spock clones to enforce an era of peace throughout the galaxy. His first clone, Spock Two, possessed all of the original's memories, abilities, and sense of logic. However, the cloning process left the original Spock near death. Since Spock Two possessed his progenitor's sense of logic, he mind melded with him and restored his mind, most likely transferring his katra back into the original Spock. The original Spock proposed that Spock Two remain on Phylos to help Keniclius rebuild the Phylosian society. ()