After the death of her father, Ruby Ando tries to reconnect with her estranged and isolated mother, whose hoarder house is a nightmare labyrinth of secrets and dangers. All the love Ruby was never shown, she sees her mother lavish on her treasures and trinkets, the possessions that posses her. But when Ruby desperately tries to free her mother, the house wages war, ensnaring both women within its maze. Brought to hideous and twisted life by her mother's love, the "Horde" is determined to purge Ruby from the collection -- or else see her join it forever.