Rob, Cath, Rhian and Ameer arrive at Cardiff City Hospital as newly-qualified junior doctors. Can they get through the day with their careers intact?

Cath and Ameer interview for a new flatmate but the candidates range from the sublime to the ridiculous. Rhian saves the life of Simon's mentor, Darth, but can she save Simon from his lonely situation?

Ameer struggles to effectively communicate bad news; can he be styled into the suave doctor he needs to be in order to get ahead?

Cath probes Rhian into finding a solution for her non-existent love life, while Simon battles with himself to find the courage to ask her out.

Cath is suspended from work and her father is admitted to hospital. Everything she holds dear is in the balance.