Based on the novel of the same name by William David Owen.

Night nurse Elaine Dobbs may be overworked and underpaid, but she has created a very special atmosphere in her ward and is extremely attentive to her patients. However, rather too many of them are dying.Inspired by the real-life case of four nurses in Austria who were tried for the murder of 42 patients in their care, this chilling drama stars comedian Dawn French in her first serious role, as an apparently irreproachable carer.

Whilst celebrating Lleu's 18th birthday, Lleu and two friends go for a boat ride, when they discover beneath the water the golden doorway to the Mabinogi (the Otherworld). They swim down and are transported back in time many centuries to the Mabinogi. There they encounter some problems with mediaeval life, and they have to deal with the conflict between fate personal choice and magic