Bullied teenager Addy Decker has had enough of her miserable life. One night, just as she's about to end it all, a beautiful boy appears in her bathroom, saving her life. At once intrigued and a little scared, she touches the boy and he opens her eyes to a whole different way of life. Addy finds herself in the presence of the Jaunters, a group of people on a mission to magically time travel to the past and save people at risk, as every life saved brings new life to the dead world of the future.

Addy is still wrapping her head around it all when her mom is attacked by a Hell Hound. Alongside her new companions, Addy jaunts to save her, but one of them disappears with Addy's mom to an unknown destination. Now it's a race against time, in every dimension, to find the rogue Hell Hound, and Addy's mom, before a plague is unleashed that will infect the fabric of history itself.