A mother searches for her missing son after a devastating calamity, only to realize that she has died and is now confined to a realm of restless spirits.

Minako waking up on a rubble-strewn beach. As she searches for her son, Ryo, she stumbles upon an assorted group, including a young man named Akira, former yakuza Shori, and ex-film producer Michael. She soon realizes the shocking truth that she has died. Her new companions are also stuck between worlds, unable to move on due to unfinished business with the living. Despite struggling to fully accept this new reality, Minako joins in a monthly "Parade," a gathering where the dead search for the people they hope to see again, while getting to know more about her fellow departed companions along the way.