Yuki, Kurumi, Rii-san and Mi-kun are the happy members of the School Life Club. Their goal is to be in touch with the many things that one couldn't be exposed to if they'd only been in class. And to that end, they sleep at school.

Another day, another exciting morning for the School Living club! It's summertime, and Yuki is ready to finish her last tutoring session with Megu and start enjoying summer break. She's ready for all the summer traditions, like the beach, fireworks, and of course, a test of courage! She's eager to get her fellow club members to brave the school at night, but you never know what could be lurking in the darkness...