Serena's mother has taken another turn for the worse and she finds herself being confronted about it from all sides. A psychologist patient challenges her methods of dealing with Adrienne as her condition worsens, while Guy questions her ability to be a carer and a consultant at the same time, and seems determined to force her to make a choice. Arthur's concern for Zosia's wellbeing spirals with her incessant partying. When his girlfriend Maria is brought in with an infection, he finds that he doesn't even trust Zosia as a doctor when she's in such a fragile state. Arthur tries to look after Maria while sweeping up the trail of destruction that Zosia leaves behind her. Mo is breathing fire all over Darwin as the pressure of running the ward gets to her, so Adele, Jonny and Mr T conspire with a patient to burst her bubble and get her smiling again.