In order to win the 5 million yen prize, Seiya and Ryosuke compete in a TV quiz show dealing with cooking. Ryosuke is very excited when he finds out that Hitomi Moriyama, his junior from school, is working behind the scenes as a food coordinator. However, during the taping of the show, the host, Itsuro Kawakami, collapses in agony. The cause is a seizure caused by an allergy to soba noodles. The eyes of those around him focus on the eyes of Itsuro, who seems to have been sexually harassed by him. Meanwhile, a large diamond on the necklace of Madame Lan, an actress appearing as a guest on the show, has disappeared.