The Mitchell Siblings are back for another thrilling adventure! In this second book of the Mitchell Siblings Adventures series, Willow, Hazel, Noah, and Ethan travel to Vancouver and find themselves facing a new mystery. A mysterious box, a talking cat, and a series of cryptic clues lead them into a world of hidden powers and ancient threats. They soon discover that they are the only ones who can stop the Shadow Walkers from manipulating the Vancouver Vortex, a source of immense temporal energy. To succeed, they'll have to master their emerging abilities and work together to unravel the secrets of the Vortex before it's too late.