Laura falls in love with a new student, Johnny Johnson. Johnny, who is a lot older than Laura, is interested in Mary instead. Although Mary is not interested in Johnny, Laura's actions cause tension between the sisters. When Charles finds this out, he is appalled that either of his girls is involved with Johnny.
Elenco: Melissa Gilbert , Michael Landon , Lindsay Greenbush , Sidney Greenbush , Melissa Sue Anderson , Richard Bull , Jonathan Gilbert , Kevin Hagen , Matthew Laborteaux , Dean Butler , Dabbs Greer , Karen Grassle , Katherine MacGregor , Ruth Foster .