A friend of Jonathan and Martha has found a strange meteorite. Jason Trask is back and now he is in Smallville, looking for this meteorite that can destroy Superman. Lois and Clark go to Smallville to investigate the story and Clark introduces her to his parents.

A fired and vengeful toyman creates a toy which can make the adults act like children, and sure, all the Daily Planet gang will be affected too, even Clark.

Lois and Clark go undercover as husband and wife to investigate missing couples in the Larry Smiley Institute, a place to help couples to repair problems in their marriages. They will find Larry's true plans and will find their romance again.