Billionaire Charles Abernathy, on the eve of his 75th birthday, invites his four estranged children back home out of fear that tonight someone – or something – is coming to kill him. To ensure his family will help protect him from whatever’s coming, Abernathy puts each of their inheritances on the line – they’ll get nothing if he’s found dead by dawn.

A young mother attempts to pick up the pieces after a horrible accident damages her memory, but she soon begins to suspect that her husband’s indiscretions are what caused her suffering and her whole family might still be in danger