Winona is called to fix the cock-up of the Yorktown's engines. She uses one of the science-bitches to help her do it. & This is not exactly what Jim thought the 'exploring strange new worlds and exotic civilizations' was about. Also, Vulcans are kind of crazy. Jim and Spock go through a alien ritual, which, yes, changes everything -- he's hoping for the better. Spock just wants to get through this with his sanity, if not his dignity, mostly intact.