What begins as a humorous escapade with a motorcycle turns into a tragic vigil for the Cunninghams and their friends. Richie purchases a motorcycle from Fonzie, but Howard angrily refuses to let him keep it, leading to a deliberately petulant tantrum from Richie to embarrass his father. But Fonzie convinces Howard that the bike is safe and Richie wears proper safety gear, so Howard reluctantly relents. Richie takes Lori Beth along one day while Fonzie is out and Chachi is repairing a truck rented by Al Potsie, and Ralph.

Romance and nostalgia humorously combine as the Cunninghams and their friends celebrate a merrily musical Valentine's Day.