Josie and Finn are happily married, with promising careers, and a gorgeous young son, George. But despite their apparently enviable lives, George's hyperactivity disorder means the days aren't always easy.

Josie's best friend Justin has always been there for her, and when she finds out she's pregnant again she turns to him for support. She loves George, but it's just such hard work, especially as Josie takes much of the strain.

Finn is suspicious. What does Justin want in return for his help? And just how close are they really?