Best friends Loli Crawford and Ryan Pope have earned their nickname, the "Bonnie and Clyde of Woolridge High." From illegal snack swapping in kindergarten to reckless car surfing in high school, they have been causing trouble in their uptight California town forever. But everyone knows that the mischief starts with Loli; when it comes to chasing thrills, drama, and adventure, no one is on her level.

At least until Loli throws the wildest party Woolridge High has ever seen and meets X, a strange, unidentified boy in the coat closet, who challenges her to a game she can't refuse--one that promises to put her love of danger to the ultimate test.

Loli and X begin an anonymous correspondence, exchanging increasingly risky missions. Loli's fun has always been free and easy, but things spin out of control as she attempts to one-up X's every move. As Loli risks losing everything--including her oldest friend--she'll face the most dangerous thing of all: falling for someone she shouldn't.