Matsubara Yoshimi has just divorced. She raises alone Ikuko, age six. She decides to rent a bigger apartment. But the place turns out to be unsanitary. Strange noises resound from the upper floor. Then, from the ceiling, water falls and slowly invades the flat. During this time, Yoshimi's life is wearing away, she can't find work, her husband wants to take the child back... slowly, she becomes afraid and her worst nightmares take form.