Hush, a timid mute girl wakes up in a jail cell. Desperate to escape, she befriends another prisoner, Mono, who understands this world far better than her, they will have to find a way out of a very dark Dungeon.
Elsewhere, Myra is a detective exhausted by life who meets someone who reignites her will to make a difference. They resume investigating unresolved cases of children vanishing year after year without a trace.