Dipper and the Forces of Demonhood

When William Cipher, a Demonic Prince receives his abilities he soon proves to be too much for his Kingdom to handle. His chaotic antics force his parents to send him away to live with an old ally on Earth. Upon his arrival he meets twins Mabel & Dipper Pines. But can these seemingly normal kids and their family teach him control? And what secrets will they discover along the way?