First Century A.D. Gaul (now France): Sarah, daughter of Mary Magdalene and Jesus of Nazareth, falls in love with Taliesin, a wandering Welsh minstrel privy to the secret of the ancient Celtic Beth-Luis-Nion tree-alphabet. Together, they protect the secret, its connection with the Sacred Feminine of the new spirituality and their young family from Roman rule and the turbulent early years of Christianity.

21st Century Australia: Jane Finley, prompted to protect her young daughter from stranger danger and to come to terms with the past, stumbles across an ancient Celtic alphabetic secret in an old mythic puzzle. When her daughter goes missing when a known predator is on the loose, and adversaries of the puzzle's creator have appeared ready to claim his work as their own, she must act. But will she be in time?