Soo is trying to read her book in peace but Sweep keeps annoying her by singing loudly all the time. Sooty uses his magic powers to change Sweep into a soft toy frog, but his magic wand isn't working properly and Sweep keeps reappearing in different parts of the bedroom still singing as annoyingly as ever! Soo goes to see Matthew to tell him about how Sweep's singing is annoying her. Meanwhile, Sooty is trying to fix his magic wand and accidentally keeps turning Soo into a soft toy frog and then he turns her into a lemon. Sweep asks Matthew why he's talking to a lemon and he tells him it's really Soo. Then Sooty turns Sweep into a lemon and Matthew thinks it's hilarious until Sooty turns him into a lemon as well. There's even more arguing when later Soo locks Sweep out of the bathroom because she thinks he'll annoy her with his singing again. Sweep starts singing loudly outside the bathroom door to wind up Soo and when she comes out to confront him, Sweep dashes in to the bathroom, locking Soo out, which makes her very angry.
Downstairs at breakfast, Matthew makes Sooty, Sweep and Soo apologise to each other for their arguing, but they're not very keen to say sorry and it just causes more squabbling, so Matthew uses Sooty's magic wand and turns all three of them into lemons. Later they all visit Hurst Park First School, Molesey, and ask the children if they ever argue with their brothers, sisters and friends. Afterwards, back at home, Sooty Sweep and Soo agree not to argue ever again and then Matthew sings a song about life being too short to argue and fight.
* Apologies for the temporary loss of sound for a few brief seconds during the song, but this actually happened when the episode was broadcast (I think they accidentally switched the sound "live" to the CITV studio for a few seconds - if you listen carefully you can hear the CITV presenter chatting to someone).