Widowed Áine, mother of two, is trying to start a new life with Gearóid, a wealthy and charming man, but the family dog Leo dislikes him, which makes the children distrust him as well. A neighbour, Liam, also has feelings for Áine, and matters take a turn when Leo is hit by a car, but was it really an accident? As Covid-19 spreads across the country, Áine must confront guilt, doubt and a dangerous secret.