Jake and Lilly are twins. Even though they seem pretty different they feel exact the same, almost like two halves if one person. When one of them gets hurt th either can feel it. They can communicate without words. And mysteriously, every year in their birthday, they sleepwalk to a train station in the middle of the night. But the year they turn eleven, everything changes. Their parents announce its time for different bedrooms, and Jake starts hanging out with a pack of boys on the block. Lily is devastated-not to mention really, really mad. And as she struggles to make friends and get a life apart from her twin, Jake finds himself dealing with a neighborhood bully and has to decide what type of person he really is.