Henry is a pygmy possum who passes the day by helping the rainforest grow, by spreading the spores of mushrooms about the rainforest floor. One day he comes across some bad news; there is a cat on the loose and he is being a bully.
With the help of some new friends, Henry saves the day by confronting the bullying cat, putting him in his place, and serving him a good lesson about friendship and his poor behaviour.
This all takes place in Tasmania, where Henry, Daisy the spider, Penelope the pademelon, Mr.White the owl, and Tassie the Tasmanian devil, all live in harmony and peace.
In total there are 44 full-colour illustrations. The story is written in rhyme and told over 71 verses.