In 1990s Scotland, a group of Catholic school girls get an opportunity to go into Edinburgh for a choir competition, but they're more interested in drinking, partying and hooking up than winning the competition.
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.