After his betrayal of Equestria in the return of Lord Tirek, Discord was given the task by Fluttershy in his process toward reformation to take on a pet. Discord ventured to Earth to claim a pet human for himself, and this human's name was Caleb Tobin. Caleb had grown up in a world of poverty, violence, and suffering, but now he is in a world filled with happiness and peace. Adjusting so quickly may not be easy for the untrusting young man, but the Main 6 are willing to do whatever they can to make him feel as if he belongs. However, Caleb may not be able to believe these ponies. He may not be capable of making such friends.