Sailing west from the Hebrides to the islands of St Kilda, everything lies ahead for Lizzie and Neil MacKenzie. Neil is to become the minister to the small community of islanders and Lizzie, his new wife, is pregnant with their first child. Neil's journey is evangelical: a testing and strengthening of his own faith against the old pagan ways of the islands, but it is also a passage to atonement. For Lizzie this is an adventure, a voyage into the unknown. As the two adjust to life on an exposed archipelago on the edge of civilization, where the natives live in squalor and subsist on a diet of seabirds, and babies perish mysteriously in their first week, their marriage - and their sanity - is threatened