Happiness, our heroine, is a warthog piglet; clever, caring and courageous. She lives on a game reserve in Africa and is the narrator of our tale. Happiness is out one day with her family when her brother is snatched by a lioness, and in the ensuing panic to escape the same fate she is caught in a poacher's trap. Her human friend Peter, The Head Ranger, rescues her and takes her back to his animal sanctuary to recuperate. At Weaver House Animal Sanctuary Happiness makes many wild and wonderful friends and when she learns that some of them have lost loved ones to poachers she is determined to help put an end to this cruel practice. She concocts two wildly imaginative schemes and with the help of her new friends and a full moon she sets out on her daring mission. Even little warthog piglets can help to change the world.