In a country called Town, a doctor named Su is found dead in an abandoned car. There is only one place the police intend to look for her suspected killer: the Saha Estates. Controlled by a secretive organization of ministers, Town is the safest, richest nation in the world. But it is a society clearly divided into the haves and have-nots, and those who have the very least—who aren’t even considered citizens—live on the Saha Estates. Residents of Saha must squat in moldy units without plumbing or electricity and can only find work doing harsh labor. For many, the apartment complex is a bleak haven for escaping even bleaker pasts—as it was for Jin-kyung and her brother, Do-Kyung, who showed up one day sopping wet and shivering. No one is shocked when a lowlife like Do-Kyung becomes the main suspect in Su’s—a citizen’s—murder. But then Do-Kyung disappears. Isolated in a barren Saha unit, Jin-Kyung makes a choice: she will finally confront a system hellbent on erasing her brother’s existence. To find him, she must rely on her tightlipped neighbors, from the mysterious janitor known as “Old Man,” to Granny Konnim, the community gardener and reluctant midwife, to Woomi, an unwitting test subject at the local clinic. On her quest for the truth, Jin-kyung will uncover a reality far darker than she could have imagined.