Martin and depressed Niles join Frasier and Roz on a cruise ship.
On the day of Nic's baby shower, Billie takes full control to make sure it goes smoothly; Devon and Leela stumble upon an apartment fire, where they assist in getting victims safely to Chastain; Leela gets a chance to prove her skills to Raptor.
A time traveler forces Capt. Janeway into a deadly showdown with her nemesis, the Borg Queen; a romance ignites during Voyager's peril.
As Alicia looks for a way to have a judgment thrown out following a shocking guilty verdict, she also begins to feel the consequences of decisions in her personal life.
Voyager's quest to return home is aided by a visitor from the future - Admiral Kathryn Janeway. However, Janeway decides to risk Voyager's shortcut home in order to destroy the Borg and save millions of lives.