Shelly is a housewife and proud mother of three who is married to a Garda detective. However, her life is turned upside down when she kills her former partner-in-crime when he threatens to expose her dark past. Her unsuspecting husband is assigned to hunt for the killer and Shelly is forced to keep up her doting wife and mother facade all while caring for her sick son, her unfaithful husband and all the usual burdens of motherhood.