There is a story that a wizard lives on top of a hill, and odd things, such as lightening flashes and colours in the sky, happen all the time.

Rosie has been dared to walk up a path to find out if a Wizard lives at the top of the hill.

At the the top, Rosie finds a strange house, and living in the house is a man named Walker, who asks Rosie to help him get rid of the bad Time-Holes. but to do this, she has to go through a Time-Hole to visit Tullis, where she has to find a scientist to help Walker.

She has many strange adventures and meets many odd looking creatures before she can bring a scientist back to earth.