Naoise plants a seed, and watches it grow into a magical flower. The others feed the pet rabbits, who are growing bigger every day. Ruairí is worried when he loses a tooth, but Nóra explains what has happened and he cheers up. Naoise’s pet caterpillar, Colm, turns into a beautiful butterfly. As the butterfly flies off into the garden, Naoise is a bit sad, but Ruairí cheers him up with their special growing up song.
As the song ends, Nóra realises that Ruairí’s new tooth has grown, and he shows it off to his brother and sisters and the children watching at home as Na Dódaí say goodbye.