Yuta, who travels the world while blogging, returns to his homeland for a reunion with a female teacher he admired during his school days. The teacher he liked during his student years married a colleague at the same school after Yuta's graduation and became Mrs. Okuda. The Okudas do not have children yet. Sae loves her husband but starts feeling a rift between them due to work busyness, among other things. Just then, there is a reunion. A married female teacher and a former student. A man and a woman alone in a closed room…
