Tash Bandara and Kirstie Collins discover the secret behind a girl's mysterious severe stomach ache, and Kath Shaughnessy comes to the aid of the hospital chaplain, Bill Moorcroft, who is struggling with a loss of faith.

Mike Barratt and his team are at crisis point when faced with a case of the deadly and contagious disease diphtheria when two Ukrainian sisters are admitted. Nick Jordan has to face his negligence hearing on the death of Janice Alexander, which gets off to a very shaky start. Karen decides that their marriage is finished.