New girl Evie Prior shows up at the school but something about her story doesn't quite add up. She is soon upsetting the rest of her classmates and causing problems for Karen. Evie attempts to empathise with Finn, who's devastated by girlfriend Sam's terminal illness. The school ends up being forced to deal with the fallout when the truth about Evie is revealed. Eleanor and Daniel have their appraisals as Karen sits in on their classes and finds room for improvement for both teachers.