A road trip on New Year's Eve goes awry when Niles accidentally falls asleep in the wrong recreational vehicle.
The agents enter the bizarre world of sideshow performers when an unseen creature begins killing the inhabitants of a circus town.
Kira learns that her mother, taken from a refugee center to be a Cardassian "comfort woman," willingly became Gul Dukat's mistress.
Archer pursues the kidnapped Dr. Phlox deep into Klingon territory; Dr. Phlox decides to cooperate with the Klingons and help find a cure to a virus that is ravaging one of their outposts.
Geordi is enamored with a beautiful and mysterious Starfleet lieutenant accused of murder.