Ever-superstitious Alex Mills will do anything to avoid a jinx. Picking up pennies, knocking on wood, collecting rabbit’s feet… you name it. That is until she steps on a crack and it actually does break her mother’s back. To save her mom, Alex must follow Hubbub Caskside, a trusty leprechaun, on a journey through the end of a rainbow to Haphaven, the world where all of Earth’s superstitions draw their power. All she needs is a rabbit’s foot to save her mom, but she soon discovers the lucky article won’t be so easy to retrieve. Not only is the rabbit’s foot guarded by Haphaven’s most formidable creature, the Jinx, there’s also a forest full of trees that knock back if you don’t knock on wood, people named Penny who do not like to be picked up, and a particularly vindictive black cat who will not be crossed.