Stardate: 46982.1. The Borg return to threaten the Federation under the new leadership of Lore. Data experiences a disturbing facet of human emotions - he feels pleasure after killing a Borg drone.

Stardate: 47025.4. Data abducts Picard, Troi and Geordi and holds them prisoners of the Borg, while he derives pleasure from being evil. Dr. Crusher is left in command of the Enterprise as it comes under attack from a Borg vessel.