Celebrating the 60th anniversary of Soka city, Souta, a Tokyo dweller engaged to Miki, ventures back to his birthplace in search of a new home for them. During his house-hunting escapade, he stumbles upon a peculiar bird, sparking a chase that leads him to a chance encounter with Akiko, a woman displaced in time from the past. As Souta guides her through the transformed city, Akiko contemplates the shifts around her and ponders her impending engagement, mirroring Souta's own journey.