Shinko Terasawa (Sayuri Yoshinaga) was always considered to be the odd ball of the bunch. At a time when romance was against school regulations, Shinko was the first to take a bite out of the forbidden fruit. Expelled from her former school, she finds herself in an all-girls school in Jokamachi, where rumors fly. One day, Shinko delivers an anonymous love letter addressed to her English teacher, Ms. Shimazaki. Convinced that the students are playing a prank, Ms. Shimazaki is adamant about getting to the bottom of this "problem”.