Mim is a woman on the edge and is stuck as the maid of honour to her not-so-honourable 'best friend', Gemma. On the day of the wedding, Mim cannot wait to be finished with Gemma and has just been offered a dream job far away.

60 AD. Romans tighten their grip on Britannia. Druidism is hunted almost to extinction. after being driven out of their commune, Rhiain- a young druid and her master Gwen are forced to flee and traverse the wilds of Britannia in order to reach the sanctuary of the Druids - Ynys Môn. On their journey they will encounter great challenges and unlikely allies on a quest that will decide not only their survival, but the future of their way of life itself.