Maeve Craddock returns home, pregnant to the south of Wales amidst the Mari Lywd folk tradition with the intention of rebuilding her relationship with her previously estranged family. Along with her is Liam, her boyfriend and the father of their unborn child. As the two try to settle in amongst the simmering tension, Maeve is gradually reminded of her family's dysfunction and begins to break down as her beacons of safety begin to vanish.