Twins Jaide and Jack Shield are about to discover a secret - that they're Troubletwisters and must defend the world against a dark, evil force. And they're about to discover the powers that go with that secret.'Come to us, Troubletwisters, join us ... welcome, most welcome!'When their home mysteriously explodes around their ears, twins Jack and Jaide are sent to stay with a grandmother they have never met, in a town they have never heard of. Portland might seem boring and quiet, but it soon becomes apparent that Grandma X is more than a little eccentric, and there are very strange happenings in the town. Talking cats, swarms of cockroaches, a miniature tornado trashing their room - the twins are about to find out what it means to be a troubletwister!