Ayoungcoupleretreattoaglasshousefortwoweeksofcelibateself-improvementbutaredisturbedbyalosthiker.Asthestrangerrevealsmoreofhimself,theirfeelingsmovefrompitytorevulsionandtheymustmakeadecisionaboutwhattodowithhim.Butwhenthecrisisisseeminglysettled,strangeforcescompelallthreetoreplaythisscenarioagain.