Twelve-year-old Vivian Van Tassel is angry: angry about her mom's mysterious and sudden death; at her dad for uprooting their lives in Chicago to move to the sleepy, creepy town of Midnight Lake; at the bullies who seem to be drawn to her no matter how much she tries to keep her head down...but mostly angry at herself for causing bad things to happen wherever she goes.

When a class assignment at her new school prompts Vivian to research the history of Midnight Lake, she quickly discovers her new home is even more peculiar than it seems. Not only was the infamous Beasts & Battlements (B&B) roleplaying game invented in Midnight Lake, but there are also some hard to explain coincidences about the town and its history that seem to tie back to the game in a way that's as puzzling as it is disturbing.

When the biggest oddballs at school attempt to befriend Vivian and introduce her to their game of B&B, she's torn between wanting to follow the path that has always worked for her--keeping everyone at arm's length--and giving these strange kids and their even stranger fantasy game a chance.

Maybe that's what it will take to get to the bottom of the mystery of Midnight Lake...and why Vivian was really brought there in the first place.