On the first night at his new place, Seung-jin hears a woman's ghostly wails. It turns out that the next-door neighbor, Ra-ni's been driving people away from the apartment because of the super-thin walls. But Seung-jin won't go without a fight. After a battle of loud noises, they decide to take turns being noisy. As they share their lives, they start to develop strange feelings for each other.
