Enterprise encounters a group of Vulcans who have split off from the normal way of Vulcan life in an effort to explore their emotions. T'Pol is disturbed by the new visitors and warns the Captain that all attempts in the past to integrate Vulcan emotions into their lives has proven disasterous. Meanwhile, a message from Admiral Forrest leaves the Captain with the difficult task of trying to convince one of the visiting Vulcans to call home to speak with his dying father.

Enrique Murciano (Tolaris)
Robert Pine (Captain Tavin)
Vaughn Armstrong (Admiral Maxwell Forrest)
John Harrington Bland (Kov)

• According to T'Pol, the Vulcans aboard the Vahklas are V'tosh ka'tur, "Vulcans without logic."
  
• At this point in Vulcan history, mind-melds are considered unnatural. Tolaris forces a mind-meld on T'Pol and she will develop Pa'nar Syndrome because of this (see "Stigma").
  
• Trip notes that one-third of Enterprise's crew is female.
  
• Fusion is the name of a jazz club in San Francisco that T'Pol once secretly visited.