Zippy, George and Bungle are a bit grumpy today. George knocks down Zippy's house of cards and Zippy messes up George's paper hat. Geoffrey reads a story called 'Zoe's Zoo'. Geoffrey accidently knocks down Zippy's house of cards, Zippy accidently throws a glass of water at Geoffrey and ruins his shirt and Geoffrey accidently squashes Bungle's model flat. Christopher comes in and Bungle accidently gets paint on Christopher's face. Christopher sings "Why Did You Do That? and cheers everyone up.

Bungle is doing lots of running in the garden as he wants to get fit, but Zippy and George are eating biscuits. Bungle ends up overdoing his running and gets very tired. Then everyone has lunch but Bungle only has a few peas on his plate and thinks he needs to go on a diet. Geoffrey convinces him to eat more food and wants Zippy and George not to eat too many sugary foods. ippy and George feel sick as they've eaten too much and Bungle's hungry. Bungle then does some more exercise, but struggles weightlifting. Geoffrey does some exercises such as weightlifting and press ups but struggles doing them. Bungle and Geoffrey play ball which makes Zippy and George tired. Then they have to join in their exercises.

Zippy wants to listen to his records, George wants to listen to the radio and Geoffrey would rather watch TV, so they ask Bungle to choose what to do and he decides they should have a sing song.