S1, E1: Nathan Mallstrom, during a routine shift deep in Clean El Mines, finds The Teather, an ancient artifact believed to be the original link between this Earth and Dark Earth. When The Teather transfers its power to him, Nathan finds himself teleported to Dark World and back again, bringing unwanted demonic visitors with him. Summer Vale and Bulo arrive to save the day, but are left with more questions than answers. They try to explain to Nathan exactly how his new powers will affect his life and the responsibility they bring.