After Holly and Hector Thorn are left behind during a simple game of hide-and-seek, they find themselves transported to the Hiddenseek -- a cursed world seemingly trapped in time. There, It, a shape-shifting witch, stalks children day and night, turning any she can lay her hands on into statues, frozen in their final moments of terror. Together with the other lost children they encounter, Holly and Hector will have to unravel the mysterious origins...

"A witch called Old Auntie is lurking near Dan's family's new home. He doesn't believe in her at first, but is forced to accept that she is real and take action when his little sister, Erica, is 'took' to become Auntie's slave for the next fifty years"--