One girl's daring adventure turns into a long frightful night lost on the water. Forced to leave the California beach behind to spend the summer with her grandma in rural Tennessee, Dannie is certain this will be the most boring summer of her life. Things start looking up when a group of local kids, mistaking her short hair and boyish figure, invite her on their 'no girls allowed' overnight kayaking trip. Obviously, her grandma refuses to let her go. But Dannie suspects the real reason is that the woman is afraid of the lake, only she won't tell Dannie why. Longing for freedom and adventure, Dannie finds an old rowboat hidden behind the shed and sneaks off on her own to catch up to her new friends. It seems like a simple solution... until everything goes wrong. Dannie soon discovers this lake is more than just vast. It's full of danger, family secrets, and ghosts.