It's 1807 on the Scottish Isle of Eigg. Four-year old Maggie believes she has killed her mother by saying bad things and now she won't say a word. She's worried if she says anything else, she'll kill her da too. The trouble is, the consumption that really took her ma, has marked Maggie too. It forces Da to marry Janet so Maggie can have a woman to look after her. It gets harder for her to stay silent, though, because Janet tries to get Maggie to talk. She's not sure she can hold out when this new ma reveals secrets that make her squirm, that make her feel like Da is doing things he shouldn't be. It seems there's more to worry about than a few words. If she can just understand what Ma's ghost is telling her from the corners, Maggie will be able to face her fears and find her voice and true power. The question is: will that power be enough to bind the family together even against the darkest secrets?