Star Trek: Voyager (1995): Imperfection

Stardate: 54129.4. Rebi and Azan are reunited with their home worlds, and leave the crew of Voyager. Mezoti is offered the chance to stay with Rebi and Azan, and accepts their invitations to live with them. Seven of Nine is placed in a life-threatening situation when her Borg implants begin to malfunction. The only way she can survive is if they can find replacement parts from a living drone. With Icheb now the last of the remaining Borg children on the ship, he volunteers to offer his implants through a risky procedure that may cost both of their lives.