After her sister's murder, Nic, her younger sister and two friends seek solace through a Pacific island kayaking adventure. Hours into the trip the women are stalked by a shark and must band together, face their fears and save each other.
As a child, Evie lost herself in the myths and legends of the sea while her family collapsed around her. A childhood tragedy and an estrangement from her loved ones means Evie must find her way in the world on her own....now the demons of her past have come to reclaim her.