21 year old Blake soon discovers childbirth is well out of his comfort zone. No matter how confronting, chances are each of these trainees will deliver a baby sometime during their careers. And for Jenna out on the road, that moment may well have arrived. She's called out to a suburban home, a first time mum has gone into labour. A high alert drug overdose propels John and Jordan into King Cross. It's a brutal lesson in the unpredictable effects of illicit drugs. Meanwhile, Carleigh faces a life and death situation. A man has collapsed during the family's Sunday dinner. With a history of heart problems, and now vomiting and sweating, he could be in serious trouble.