Theyre a glamorous family the Caseys. Johnny Casey his two brothers Ed and Liam their beautiful talented wives and all their kids spend a lot of time together - birthday parties anniversary celebrations weekends away. And theyre a happy family. Johnnys wife Jessie - who has the most money - insists on it. Under the surface though conditions are murkier. While some people clash other people like each other far too much . . . Everything stays under control until Eds wife Cara gets concussion and cant keep her thoughts to herself. One careless remark at Johnnys birthday party with the entire family present starts Cara spilling out all their secrets. In the subsequent unravelling every one of the adults finds themselves wondering if its time - finally - to grow up?