When the Herring family wake up in a basement after a car accident, the only thing scarier than not knowing how they got there, is realising that they're not alone.
An international group of film students finds a disturbing video clip on the dark web which seems to contain poltergeist phenomena. Agreed that it's just what they need for their latest documentary project the group travels to the sanatorium shown in the video clip. Once there, they rig up their camera equipment and start to explore the possible ghost activities - until the true horror begins.
Choi So-young (Choi Eun-hee), a poor female law student is in trouble because her grandmother, who had been sending her tuition money, passes away. With the help of her friend Hee-suk, (Kim Suk-il) who dreams of becoming a writer, So-young fools Choi Rim (Kim Seung-ho), a lawmaker, into believing she is his daughter and moves in his house. She studies hard and becomes a lawyer. At her first trial, she defends a female inmate (Hwang Jeong-sun). Coincidentally, the story of the inmate is very much similar to hers. So-young defends her, saying how difficult it is for a woman to survive in a cold capitalism, arguing for her rights in tears. After she wins the case, she goes home and confesses her crime to Choi Rim's wife (Yu Gye-seon).