Ea, a young woman of 25, is suddenly confronted with the tragic loss of her estranged sister. At the funeral in the remote hometown, she is startled by a sound coming from the adjacent forest. Driven by an inexplicable urge, Ea embarks on a solitary quest to uncover the mysterious origin of these unsettling noises, unaware that this journey will inevitably draw her deeper into the sinister heart of the woods. During her journey, she encounters her sister, and they spend their final hours together.