Dafydd Woodruff, a surgeon in present-day Cardiff, Wales, receives a letter from a 13-year-old girl claiming to be his daughter and to have a twin brother. Flashback 14 years to Moose Creek, a tiny outpost in Canada's Northwest Territories, where Dafydd took a year-long post to clear his conscience after botching the surgery of a young boy in Wales. In that isolated community, Dafydd met Sheila Hailey, an acerbic head nurse, who would later accuse him of fathering her twins. Predictably, Dafydd returns to Moose Creek after learning that the DNA test he demanded proves he's the father of Sheila's children. In his bumbling efforts to unearth the truth about the past, the empathetic Dafydd stumbles on long-buried town secrets.