Claire Westley/Williams a 16 year old girl finds she has the ability to walk through her own shadow and by doing so, can transport herself anywhere else in the world. One day while walking through her shadow she is accidentally transported into a mysteries cave where she finds a necklace at its centre. Keeping it Claire finds that this was a big mistake, for the necklace contains evil powers that make all the wearers worst fears come true. Whatever she fears happening is now possible - from hurricanes to planes crashing to monsters that come out at night and take people to an unknown place. However much she tries to get rid of the necklace it finds its way back to her. Will she ever be able to fix what she has done?