Grandpa-Grumble gets a stomach ache and refuses to take his medicines till the others throw him and the Ancestor a party. At the party, each of the characters performs an act of entertainment; the Hemulen recites a poem that he has written, Toft reads from his book, Mymble dances accompanied by Snufkin's music, and Fillyjonk cooks Welsh rarebit and performs a shadow puppet show about the Moomin family returning home. However, the Ancestor does not appear, as Grandpa-Grumble had mistaken his own reflection in a mirror upstairs for the Ancestor, to whom he makes everyone give a toast.