In a near future, crimes and accidents can be prevented by making just one phone call to the past. However, the peace of this utopian world will be disrupted by a methodical killer who seems to have discovered the only flaw in this system.
Wanting to build a family, a childless couple fosters a young orphan, survivor of a tragic childhood. But their act of love turns to horror when they find themselves besieged by a malevolent entity intent on destroying the new family.
