Star Trek: Voyager - Season 6

Returning from an away mission, the Delta Flyer is boarded. Tuvok is assaulted by a cloaked alien from a xenophobic race called the Ba’Neth. Neurological damage leaves the once-disciplined, logical Vulcan with the mentality of a lost and scared child. With Neelix’s help, Tuvok discovers new hobbies and embraces the concept of ‘fun.’