The film concerns a struggling young woman, who tries to reacquire her normal life by taking a job as a security guard at an abandoned apartment building.

[1] Julia Streak (Louisa Krause) is a troubled, antipsychotic-dependent young woman who takes a job as a night guard at a grand but abandoned apartment complex so she can support her daughter, Clara.

Using a hammer from Jim's belongings, Julia breaks the lock and discovers that camera 441 is a corridor leading to a dormitory.

Julia searches through the internet and finds a video of the Wellville, a center for deformed and mentally-challenged children, which had been accused of abusing its patients.

Following Cooper, Julia meets an apple-cheeked boy (Henry Kelemen), who gives her more details about Wellville: the children, four in total, attempted to escape, but they were caught and forced inside a room containing a reservoir of contaminated water.

Thinking that the survivor struggling to get out of the reservoir is Clara (Morgan Waulters), Julia jumps inside, despite Cooper's warning.

Finding the door locked, Julia asks for mercy and is confronted by the children, including the face-deformed blonde girl.

Frank Scheck of The Hollywood Reporter wrote, "The film is effective for long stretches, mainly due to Rockaway's superb use of his principal setting."