For a class project about marriage, Laura hopes to "tie the knot" with a class hunk. Instead, she's paired with none other than Urkel (who would only consider his "pet" as his partner).
Urkel goes above and beyond the requirements of the assignment to show that he can be a good husband, but a resentful Laura gets angry when he presents her with an expensive diamond at the end of the assignment.
Laura complains to her mother, but Harriette says she only wishes Carl would appreciate her half as well as Urkel does Laura. Carl – who had been taking his wife for granted throughout the episode – overhears the conversation and later sends Harriette some flowers and makes a promise to change his ways.
In the end, Laura decides to give Urkel an "A" for his work.