During their exploration of a decimated colony, the Voyager Away Team is thrown into turmoil with the sudden onset of the Vulcan mating season. The ensuing irrational advances of Vulcan crew member Ensign Vorik wreak havoc when they trigger Lieutenant Torres' involuntary Klingon mating instincts. Meanwhile, Commander Chakotay finds the remains of one of the colony's invaders — the Borg.

Alexander Enberg (Ensign Vorik)
Bruce Bohne (Ishan)
Deborah Levin (Ensign Lang)

• Vorik experiences the pon farr, the Vulcan mating season that occurs every seven years. If he does not mate, he will die.
  
• The Sakari were attacked by the Borg. This episode sets up the Borg storyline, continued in the next episode "Unity".