During an Outdoor Activities Club meeting, Nadeshiko Kagamihara, Aoi Inuyama, and Chiaki Oogaki debate what it means to be a real Yamanashi native. Somewhere along the line, Chiaki brings up the Yamanashi Kids' Stamp Rally, which Nadeshiko has never heard of. The rally encourages one to visit famous places in the prefecture and collect stamps; those who complete the rally will win a year's worth of Minobu steamed buns. Enticed by the humongous food prize, Nadeshiko is set on participating. Follow the Outdoor Activities Club as they travel around the Yamanashi prefecture to collect stamps and explore what the region has to offer!

Upon returning from school one day, Rin Shima encounters an unfamiliar three-wheeled motorcycle parked outside her house. After asking her father about it, she learns that the vehicle is a temporary loaner while her moped undergoes its annual maintenance. With arrangements to go camping at Yatsugatake the next day, Rin has no choice but to utilize the three-wheeler. As she embarks on her trip, Rin's traveling experience soon shifts gears, and she discovers a refined driving performance on new unexplored roads.

When we first met Yuno, she'd just been accepted to the prestigious Yamabuki Art School, and it was up to her new neighbors at Hidamari to help her find her way in the big scary world. Now a seasoned vet of the Hidamari Apartments herself, Yuno's newest challenge is to help the latest arrivals, Nazuna and Nori, acclimate to life on their own. Of course, since it IS Hidamari, there are still lots of trials and tribulations ahead, and nothing will ever go quite as expected. But with friends like Miyako, Hiro, and Sae ready to lend a hand, there will always be a ray of sunshine at the end of every storm in Hidamari Sketch x Hoshimittsu. (Source: Sentai Filmworks)

A year later, the daily life of the students of the Hidamari Sou at Yamabuki High School continues: Yuno and Miyako are second years, Sae and Hiro are third years, and two new students, Nori and Nazuna, move into the Hidamari Sou. (Source: AniDB)