Lois and Clark's parents show up to spend Christmas with them. Mindy Church reorganizes the Intergang and creates a Kryptonian virus to make Superman die. Now and for the first time in his life Clark is sick, but this sickness can kill him, unless Sam Lane helps him with a risky recovering process.

Just before their wedding, Lois and Clark probe the theft of exotic amphibians, which leads them to a freakish biologist and a plot to assassinate the President.

The Wedding Destroyer arrives as Lois and Clark prepare to settle down in marriage.

An elfin visitor puts Daily Planet Christmas Eve partygoers into a time loop--and plunges the city into hopelessness and despair.

Lois and Clark turn to Lois's father as they battle infertility problems; a telekinetic ex-con turns his mind into a deadly weapon.