Chakotay finds he can communicate with aliens by inducing a vision quest. He becomes increasingly confused when the vision quest becomes a boxing match that he can't leave.
Communicating with the entities behind the vision becomes more important as it is obvious they are the only ones who know how Voyager can escape a dangerous region of space that, according to Seven, could easily destroy the ship. Chakotay slips in and out of reality, returning to the boxing match again and again, as his mind had latched onto the boxing holo-program he had recently participated in. Chakotay fears he is endangering his sanity and safety, but finally accepts a confrontation with his 'boxing opponent'. The alien sends information on how to escape, using the voices and words of the crew. Chakotay, back on his feet, manually adjusts the ship, being unable to actually explain it to Kim or the others.
After the ship is safe, Chakotay is given some time off, which he uses to further continue his boxing holo-program.