Best friends Milly and Jess have shared everything from secrets to boyfriends since they were children. Milly has a prestigious job and lives in a gorgeous home with her husband and two kids. Jess has a rewarding job as a town planner and lives with her boyfriend on a houseboat. Their rock solid friendship is soon going to be tested when Milly discovers she has breast cancer and Jess struggles to have a much longed-for child.