In this retelling of a Celtic Mabinogion myth, Fountainville is a strange, lonely town on the edge of the world, with its own healing secrets, as revealed by Luna, the assistant of Begum, the Lady of the Fountain. Under their care the town flourishes, but when the mysterious Mr. Knight arrives at their house of 24 women, everything begins to change. Spurred along by Rafi, the giant of the woods, and the all-action Leo, events begin to unravel fast for Luna and Begum.