In the West, there are demons; in the East, there are yakshas; in Japan, there are yokai; in China, there are evil spirits; and in Taiwan, there are the Magicians. A legend surrounding a girl in a red dress is about to unfold!

The protagonist, Wei Liao, encounters an accident during a school trip and becomes entangled with a Magician—the girl in the red dress. Despite having no memory of the mysterious event, they inadvertently form a contract, beginning a symbiotic relationship.

Wei, who is otherwise useless except for his love of food, faces an unavoidable fate as supernatural events continue to occur. Meanwhile, his relationship with Nana starts to change...

What is the true cause behind everything? Are these events mere coincidences or inevitable?

And what unknown threats lie ahead?