In 1944, while much of the world is at war, 14-year-old Teddy wages her own war against herself, her brother, and her perfect, and perfectly despised, mother. Forced to spend the summer at the beach with a grandmother she'd never met, Teddy faces her enemies with arrogance and anger. But as the summer unfolds, she begins learning the answers to some painful questions about the past that destroyed her family and left her mother and grandmother bitterly divided.