Bayou Moon introduces Cerise Mar, who lives in the Mire with her family. Cerise's family owns much of the Mire, the swamplands of the Edge. But another family is after their land. When Cerise's parents disappear, she fears the worst. Now Cerise, with the help of changeling William, must fight to keep her land and find her parents. But Cerise's problems may be greater than she expects when she realizes she is caught in a war between two nations of the Weird.