This thriller, in the claustrophobic mode of Rear Window, finds Meg (Jodie Foster), a recent divorcee, and her combative daughter Sarah (Kristen Stewart), trapped in the secret vault/bomb shelter/safe room set up by their apartment's previous owner, a paranoid millionaire with a squabbling family. The least favorite cousin, Junior (Jared Leto), has broken into the apartment with the help of security expert Burnham (Forest Whitaker) and tag-along psycho Raoul (Dwight Yoakam). The bad guys want in to the vault, where the old millionaire hid his millions. The girls just want to get out, but the protected phone line inside the room hasn't been activated yet (they just moved in). Meg's inner mama tiger takes over escalates as the burglars take more and more drastic steps to try and enter the impregnable vault, and Sarah moves from being a tough, sullen teen to a tough, sullen, wily teen.