Seven's life is at risk when her cortical implant - essential for regulating her implants and balancing them with her human physiology - starts to degrade. As Captain Janeway and the Doctor try to come up with a way to help her, Icheb realises he may have to take matters into his own hands.
When Voyager shuts down main power and interrupts the regeneration cycle of the Borg children, Neelix keeps them entertained by telling the story of why a certain section of Deck 12 is off-limits, and how the space-dwelling creature that lives there came aboard and "haunted" the ship.
An older Kes returns to Voyager to take revenge on Janeway for taking her away from her homeworld too young. Using her telekinetic powers to travel through time, Kes intends to deliver Voyager to the Vidiians and "rescue" her younger self.
Seven becomes emotional when Icheb's parents are located, and it is assumed that he will leave Voyager to rejoin them. However, she later becomes increasingly concerned when it appears that they were not honest about the circumstances of his original assimilation.
A mysterious female alien contacts Voyager, claiming to be Ensign Lyndsay Ballard, who had been killed on an away mission years earlier.
Borg children who were rejected by the Borg as unworthy drones abduct Chakotay, Kim, Neelix and Paris.