After dying unexpectedly, modern man Cheng Yan awakens in a medieval, European-style world as Roland, the fourth prince of Graycastle. When he saves the witch Anna from execution, he discovers that magic is real. Realizing its potential, Roland begins using magic to replace technology, launching a plan to build a “magical industry.” Defying a society that despises witches, Roland recruits them to transform Border Town and improve its people’s lives. He also introduces modern business practices, develops firearms, and gains growing support. As his forces and influence expand, Roland unites humans and witches, advances his rule across Graycastle, and uncovers the ancient secrets of the devils and the Witch Empire.