During a meeting of the Outdoor Activities Club, Nadeshiko Kagamihara, Aoi Inuyama, and Chiaki Oogaki discuss the essence of being a true native of Yamanashi. The conversation leads to the Yamanashi Kids' Stamp Rally, a novelty to Nadeshiko. This rally involves touring famous locations in the prefecture to gather stamps, with the ultimate reward being a year's supply of Minobu steamed buns. Intrigued by the delectable prize, Nadeshiko is determined to join the adventure. Join the Outdoor Activities Club on their journey across Yamanashi, as they collect stamps and unravel the treasures of this scenic region!