Mary Smith, a young girl who lives with her great-aunt in the countryside, follows a mysterious cat into the nearby forest where she finds a strange flower and an old broom, none of which is as ordinary as it seems.

Upon being sent to live with relatives in the countryside due to an illness, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there – a girl who may or may not be real.