Fonzie and Chachi's grandmother becomes very upset at them for suggesting that she move into a retirement home after they observe some signs of senility.

Fonzie pledges his love to Ashley but risks losing her when he allows an old girlfriend to spend the night at his apartment. Meanwhile, Howard teaches K. C. to drive.

Fonzie's adoption request is reconsidered after a stern talk by Howard to the adoptions administrator.

Meanwhile, Joanie and Chachi continue to prepare for their wedding.