Lewis (Luke Evans) is a seemingly ordinary guy, but under the surface he hides a singular obsession – revenge. The focus of this obsession is Cathy. In broad daylight, Lewis kidnaps Cathy and takes her to his home where he’s built a soundproofed 10x10 cell. Lewis plans to extract a dark secret from Cathy’s past, but there is more to Cathy than meets the eye. As Lewis’ motive for the kidnapping reveals itself, it’s clear that Cathy will not become a victim and is a formidable match for her kidnapper.