Minatsuki Aitoku was a normal junior-highschooler. When she discovered a new student called Derpina Derpington, with her twin brother Derp Derpington, exchange student and Star Trek fan Kiruku Mikoi, Anti-Bullying Club president Saitou Kazuma, and sophomore students Mitsui Tsunaishi and Akina Ichitose. They experience weird, thrilling, and humorous events everyday, in the fictional town of Sanakutsumi in Akita Prefecture.