The group's popularity soars after a blogger's favorable review, thanks to Retsuko's performance in singing death metal. Hyodo proposes of selling CDs with handshake coupons that will allow the consumer to shake hands with the idols for a few seconds. The CDs sell out quickly, and the group takes off for a concert in Hokkaido. Concerned by Retsuko's odd behavior, Haida secretly tails her to Hokkaido. At Hokaiddo, Haida befriends Tadano, who flies him back to Tokyo...