One quiet summer afternoon Will and Lexi see a very strange sight - a bright flying object in the sky.
Nervously, they go to investigate and discover a spaceship has landed in a nearby farmers field.
On board is a little spaceman called Olly, and his sister Molly, they cannot get back to their own planet Zolly, without Will and Lexi helping them.
This task will involve Will and Lexi being granted magical and benevolent powers beyond their wildest imagination.