Dan Chong helps his sister, Dan Shan, to buy a 2nd-hand drawing tablet online. He and the seller arrange to meet at Nancheng's Anime Carnival for the trade. Wu Man Man replaces Wi Zhi as Azhai for the book-signing event held there. Dan Chong helps his sister to acquire the signature of Azhai. He accidentally finds out that the seller of the drawing tablet is actually Wei Zhi, whom he met at the subway by coincidence.