A sci-fi comedy about girls who have strange experiences such as transformation and time slip. Saki, a 4th grade elementary school girl who admires Hanamura, her homeroom teacher who is a sportsman, thinks that if she grows up, she might be able to run for Hanamura's lover, so she wants her shooting star to make her 18 years old. I beg you. The next morning, Saki feels cramped in her pajamas, and when she looks in the mirror, she is surprised to see that she has become an adult...!?