Pobre Diablo follows Stan, a typical 18-year-old, except that his dad is the Devil. The freshly-turned young adult is tasked by his father to go to earth and create chaos and bring about the downfall of humanity. However, as an 18-year-old, Stan has other plans. Like most children just out of the nest, Stan likes to socialize, to drink and party, and he dreams of being a performer on Broadway.