"On a beach clean-up, thirteen-year-old Charlie and his brother, Robbie, find a ponaturi, a mermaid, washed up on a beach. An ancient grudge between the Mori gods Tane and Tangaroa has flared up because a port being built in the bay is polluting the ocean and creatures are fleeing the sea. This has reignited anger between the gods, which breaks out in storms, earthquakes and huge seas. The ponaturi believes Charlie is the only one who can stop the destruction. So begins Charlie's journey to find a way to reunite the gods and discover why he is the one for the task"--Publisher information.