In the heart of Osaka's old neighborhoods lies a run-down apartment building known as "Copo." Its thin walls and lack of privacy are home to a group of residents, each struggling with their own pasts and uncertainties. Yuri, a part-time worker, has fled her family, while her neighbors—an aloof man who lives off women, a shy laborer with clumsy affections, and an older resident running a mysterious business—navigate their complex lives. The discovery of a fellow tenant’s death forces them all to confront their personal dilemmas and the fragile nature of life in the "Copo."