Milly has been best friends with Jess for as long as she can remember. Ever since they were little children, these women have been sharing pretty much everything, including clothes, big-time secrets, and even boyfriends. But it's time for them to act like adults. Milly is married now and is raising two wonderful kids. She's got an awesome job and lives in a gorgeous house. Jess is enjoying life with Jago, her man, and they're living on a houseboat right in the middle of London. They're still BFFs. However, when Milly learns that she has breast cancer, and Jess struggles to have a child, everything turns into a disaster. How can you tell your friend about things like that?