Casey (short for Acacia, but dont call her that) is spending a few summer days with her parents at Disneyland. Just like they do every summer. Except this summer is different. Caseys best friend has dumped her. She starts high school in the fall, and shes tired of following her parents rigid schedule and putting up with their embarrassing behavior. Shes miserable. Even Disneyland cant make her happy. Then, standing in line for the Indiana Jones Adventure, she bumps into Bert. A year older. Tall. Brown eyes. Nice. But Berts parents are mysteriously absent. And he wears an old, broken Mickey Mouse watch. Bert has secrets. When Casey ditches her parents to run off with Bert, those secrets are revealed in the darkness of a Haunted Mansion Doom Buggy, aboard a rocket ship hurtling through Space Mountain, and in the cramped confines of a Matterhorn bobsled. To make matters worse, Casey must also fight off her parents attempts to ruin her relationship with Bert and fend off a pack of selfish, rowdy girlsthe Bra Strap Girlswho seem intent on sabotaging her vacation and stealing Bert. Casey cant stay in Disneyland forever. When she leaves, with or without Bert, shell have left behind her childhood and learned some important lessons about what it means to grow up.