Ian Mitchell is a defence lawyer who has recently split up from his wife Laura Mitchell. His life is changed one day when a box turns up at his door with a picture of a man, a gun with certain instructions "to expire" within 2 days.

Narrowly surviving his first day in the game, Ian finds himself and his family in further danger as tactics taken by the game's creators continue to infiltrate his life.

After a near death encounter with another hunter, Ian discovers that 'The Watchers' steering the game are relentless as he frantically attempts to gain the upper hand.

With the clock counting down, Ian uses everything at his disposal to save his family and comes face-to-face with the sadistic people in charge of the game.

With the help of a questionable criminal client, Ian devises a plan to get his daughter back from 'The Watchers.'

Ian and his estranged wife Laura find themselves forced to make one last desperate attempt to save their daughter before the clock expires.