Trouble is looming over the quiet coastal town of Portland. A door has been opened to the Evil Dimension, and twins Jack and Jaide are about to face their greatest challenge ever....

Jack and Jaide Shield finally learn what it means to be a warden in training as they pit their wits and gifts against mysterious fellow troubletwister Stefano Battaglio. But the competition soon gets serious when a way is opened to the dangerous realm of the Evil.

Grandma X discovers her twin sister, Lottie, is stranded there - but she's forbidden from travelling through the vortex to look for her. That doesn't stop Jaide and Jack from trying, and the rescue becomes urgent when the twins find out about a plan that will trap Lottie on the other side forever. Can the twins find Lottie, defeat the Evil and get everyone safely home to Portland - before it's too late?