On the way home from school, the kids find a doll sitting on a trash can.  Keiichirou want it for some reason but Satsuki won;t let him take it.  When the doll shows up later at their house, Satsuki cleans some dirt off it before realizing that Keiichirou must have disobeyed her and brought it home anyway.  He denies it.  Later, the Mary Doll starts calling on the phone and appearing everywhere.  When things get out of hand, Hajime takes Satsuki and Keiichiro to his secret hide out.  Mary doesn't have any problems finding them though, and she's brought friends.