Trainee psychiatrist Doctor Hannah Wright has only just got her head above water in the acute psychiatric ward at Menzies Hospital when she's thrown into the deep end of the outpatient clinic. Keen to develop her skills in talking therapies, she finds herself up against a boss who's focused on medication and a senior colleague with a score to settle. Hannah's fellow first-years face problems of their own: on-and-off flame Alex is being bullied, Ndidi's marriage is in trouble, Jon feels isolated and Carey is concerned their autism will be a career barrier. While Hannah comes under pressure to seek therapy herself to confront a traumatic past, her patients' health issues range from OCD to ice addiction, childhood abuse to the mental impact of ageing, and from bad parenting to bad genes.