Set in Nagano prefecture, Ohisama covers the life of Yoko Sudo through World War II. Yoko Sudo with her smile is able to bring brightness to those around her & she follows her mother's motif to laugh through the hard times. During the onset of WWII, Yoko is a high school student and "Ohisama" follows her as she eventually becomes a teacher and then gets married and has a child. Yoko then opens a soba restaurant with her student.