At 3 a.m., blackout traps Wendy and 13-year-old Sally, who foresees fire and murder, flees men in black. Sally says she died once before: her mother was murdered, a villain hunted a mysterious iron box. Wendy links it to Richard, the tutor boss she reported 3 years ago. Police-guarded, they outwit Richard and unravel Sally's rebirth and the box.