While performing experiments on the Delta Flyer, Seven of Nine, Harry Kim and the Doctor are attacked by a Delta Quadrant race who view "photonics" such as the Doctor as mortal enemies. With time running out, the Doctor must hide in plain sight — taking refuge in Seven of Nine's Borg implants. Taking over her consciousness, the Doctor must convincingly behave as Seven of Nine to survive. The Doctor's delight in experiencing human sensations, however, clashes with Seven's strict physical and mental disciplines — and is only exacerbated by romantic advances from the alien captain toward Seven and The Doctor's attraction toward a female alien with whom he works.

Fritz Sperberg (Captain Ranek)
Megan Gallagher (Lieutenant Jaryn)
David Starwalt (Captain #2)
Marva Hicks (T'Pel)

• The Lokirrim's holograms revolted against their organic creators and they are at war.
  
• Tuvok goes through the pon farr and Tom Paris creates a holographic representation of his wife, T'Pel, when the chemical treatments do not work.