Much to his dismay, Moomin notices that his tail is beginning to thin out. Worried that Snorkmaiden will no longer love him if it becomes bald, he seeks professional advice from doctors and specialists but gets no answers. Moominmama has a different approach, though; she cooks up a magic potion that grows his tail back thick and luxuriant, but also turns it a glowing gold! Moomin quickly becomes a local celebrity, and while he enjoys the limelight at first, he soon realizes the downside of fame and yearns to return to simple family life. With valuable lessons laced with plenty of laughs, the Moomin and the Golden Tail Book will be a beloved story among the young and old alike.