In 2020, Shinsaku, an employee of a major corporation in Tokyo, ends up moving to a rural town in the Tohoku region to work remotely during the COVID pandemic. His new home is a two-story house facing the Sanriku Coast. His landlord, Momoka, works at the local city hall and deals with the widespread problem of abandoned houses, so as a first step, she has decided to rent out a detached building on her own property to Shinsaku.
During a two-week period of self-quarantine, Shinsaku sneaks out alone every morning to indulge in his hobby of fishing, and fully enjoys the fresh food he acquires from the local environment. While the world cowers in fear of a little-understood virus, to Shinsaku, his new surroundings are heavenly. On the day his isolation ends, he sees Momoka remove her face mask for the first time, which stirs feelings within him.
When townspeople learn that some unknown man has taken up residence on Momoka’s property, they can’t contain themselves. Shinsaku receives a rough welcome, but he tries to win them over with his inherent positivity and initiative. Meanwhile, his company begins a project to utilize abandoned houses, so he works together with the locals in an attempt to revitalize their town.
Just as he is settling into his new life on the Sanriku Coast, Shinsaku learns one day that Momoko lost her husband and children in the Great East Japan Earthquake and Tsunami nine years earlier. The house that he is renting now was originally intended to be a new home for Momoka and her family.