On a spooky night, single mother Choi Ji-ji ended her life in an extremely cruel way with a trance, leaving only the poor little boy Xiaobin (played by Lee Hyung-suk) to face the unknown world alone. Because he could not contact other immediate relatives, Xiaobin was raised by his uncle Xu Changhuan. In order to take care of his nephew who fell from the sky, Xu moved into Xiaobin's home with his pregnant wife Jin Ruini (played by Han Eun-jeong) and Ruini's sister Yulin who was still in school. But the bad luck did not seem to end with Jiaji's death, but intensified. Ruini and Yulin encountered strange events one after another, and Xiaobin often showed strange and terrifying expressions. And the closed warehouse in his home obviously hides unspeakable secrets. The terrifying evil spirits are wandering around, and Xu Changhuan's family is in an irreversible situation...