Mo lives on the planet of Floopar, which doesn't have any pets or animals.  Therefore Mo travels to the planet Earth to adopt pets and bring them back to his planet.  He discovers through the process he doesn't know much about pets and needs to learn how to take care of them. He also sees that many pets are homeless.  Mo decides to make it his mission to find homes for pets and learn everything he can so he can return to his planet with the knowledge of how to take care of the animals.