When Charlie and his dad follow a parade of their neighbours through the local park they discover everyone is walking towards a big pile of dirt! But this isn't just any pile of dirt - this is compost. Charlie learns from his neighbors about the gardens they have and the delicious vegetables they grow in them. Mr Martino is growing tomatoes while Mrs Lee has onions and Mr Singh has herbs. Charlie is determined to become a gardener as well - and come up with something special to add to his neighbour's plans to make the best spaghetti sauce ever!