Modern man Cheng Yan unexpectedly dies and his soul travels to a medieval European-style otherworldly continent, becoming Roland, the fourth prince of the Kingdom of Graycastle. This playboy prince saves the witch Anna at an execution scene and is shocked to discover that magic really exists in this medieval-style otherworld. When Anna, as a witch, displays her magical skills, Roland realizes that magic can replace some modern technology, so he formulates a "great development of magical industry" plan. Thus, in an era where everyone hates witches, the independent Roland begins to recruit witches, using their magic to transform Border Town and improve the lives of himself and the locals.