In this episode, the subject of friendship is under the spotlight. Childhood best mates Karra and Danny have a three-year-old son with a rare condition, who requires 24-hour care. Now awaiting the arrival of their third child, they realise it's their deep friendship that has helped them cope and given them their positive outlook on life. Cathryn and Dean became best friends after meeting at a fracture clinic. Six years on, their relationship has taken an unexpected twist. And both Mandy and Melvyn were born unable to hear. Having already had one hearing child, they hope that having another will bring the sound of chattering children into their home.