Emergency services receive a call about a house fire on the Gurnos estate in Merthyr Tydfil. People are reported to be inside the house. The fireman on duty recalls arriving to a blazing scene, entering the house to save lives. News reports reveal that the fire killed a mother, Diane Jones and her infant daughters Shauna and Sarah Jane. Whilst initially unclear if the incident is a tragic accident, reports emerge that the fire was deliberate, and police launched a triple murder inquiry. Three women are charged with triple murder, and two convicted of arson with intent to endanger life. One of the women, Annette Hewins, makes a desperate plea of innocence from prison. After nearly three years of imprisonment, Annette’s conviction was deemed unsafe and overturned at the Court of Appeal. Annette walked free but could never escape the catastrophic impact of the ordeal. Annette’s oldest daughter, Nicole, starts a journey towards understanding what her mother experienced, but she has more questions than answers about how her mother could be so failed by the justice system.