Plot summary
Lois tries to avoid spending Christmas with her parents because they always fight but they surprise her by showing up at her apartment uninvited causing chaos. Her father, Sam ( Harve Presnell ), also brought with him his new fiancee, an android named Baby Gunderson (Kathy Trageser). In the meantime, Mindy Church ( Jessica Collins ), who is now the head of Intergang even though Intergang is shut down and keeps a low profile, plans to kill Superman using a virus from Krypton. Superman gets sick and Lois asks her father's help. Sam explains that the only cure will be if Superman gets very close to death since that way the virus will die too.
The treatment is successful and Superman gets well, just in time to save Lois and his parents' life. They suspect Mindy is behind everything but Mindy manages to frame her partner Joey Bermuda A.K.A. The Handyman ( Robert Carradine ) for rejecting her advances, since they are both married and he believes in the sanctity of the home, and she gets away.
Credits
Adapted from Wikipedia contributors, Lois & Clark: The New Adventures of Superman season 3. HTML formatting and reference markers removed.