A small village in the wilds of Northumberland is rocked by the disappearance of twelve-year-old Tammy. Only her twin brother, Ethan, knows she is safe - and the extraordinary truth of where she is. It is a secret he must keep, or risk never seeing her again.

But that doesn't mean he's going to give up.

Together with his friend Iggy and the mysterious (and very hairy) Hellyann, Ethan teams up with a spaceship called Philip, and Suzy the trained chicken, for a nail-biting chase to get his sister back... that will take him further than anyone has ever been before.