Mr Hooper and The Cat with the Coloured Tail travel through the countryside in their ice - cream van. They enjoy looking for heart shapes (their favourite game) and making people happy with their delicious moon - creams. But a dark feeling is following the cat. Something is wrong. When the ice - cream van enters the forest, Mr Hooper and the cat realise the heart of the world is in danger. Will they be able to save it? A lyrical fable about love and healing.