Gaz, Nathan, and Terry have decided to break into the home of Dr. Richard Huggins and his wife Ellen, as it is in the countryside and is said to have a very large safe full of cash.

When Mary sees Ellen coddling Terry then reassuringly kissing his bare buttocks after administering an injection, she realises that they have been tricked.

After being secretly drugged by Ellen, Terry hallucinates Mary's twin sister Jane, who went missing a few months back and is presumed to have run away.

Richard tries to persuade Mary and Terry to drink tea with them, during which they discuss the untimely death of the couple's daughter, Kate, years prior, as well as the mysterious disappearances of numerous teenage girls in the area.

The film ends with Terry's mother discussing her son's disappearance with the Hugginses, unaware of the couple's involvement and the presence of Mary's freshly buried corpse in the garden, presumably alongside Gaz and Nathan.

[1] In May 2019, Jake Curran, Ian Kenny, Andrew Ellis, Sylvester McCoy, Rita Tushingham and Stacha Hicks joined the cast.

The website's critics consensus reads: "The Owners will prove excessively mean-spirited and over the top for some, but should be just pulpy enough for genre enthusiasts up for some home-invasion thrillers.