At 28, Yoshimura Osamu faces despair: love lost, job gone, hope diminished, and youth fading. After spending his last money on a drink, he meets Honoka, a captivating woman from the pub, who offers him encouragement and her address, suggesting he visit if in trouble. She apparently manages an apartment complex, which Osamu, intrigued, decides to explore. Arriving at 'Terrace House Hinosaka,' he discovers a dilapidated place, not the luxury he expected. He's greeted by Hinosaka Mitoko, a small but spirited girl revealed to be Honoka's daughter. With Honoka having eloped, Mitoko now runs the boarding house with its odd tenants. Osamu, describing himself as tall and educated but jobless, starts living with Mitoko, challenging his view of himself and his circumstances. He navigates life with peculiar neighbors, rebuffs advances from a coworker, thwarts a rich neighbor's plots, and seeks the truth about Mitoko's enigmatic teacher. Entwined with misfortune, Osamu's future is uncertain, leading to an unpredictable journey of growth and discovery.