Bethan Gwyndaf is leading a double life. To her friends at school she's your average, fun loving, cocky teen with a normal family but the reality is vastly different. At home she tries to juggle her Father's sociopathic tendencies with her mother's bipolar a particularly severe episode seeing her sectioned in a psychiatric hospital.
Bethan and Poppy get closer, but Bethan’s attention is demanded by Lydia and Travis. Nana suggests that Bethan comes and lives with her whilst Trina is in hospital.
Bethan finds herself double booked when Poppy invites her to study but it’s Lydia’s birthday and she wants Bethan to go out - on top of which Trina is unexpectedly discharged
Bethan stays home from school to look after Trina, missing an important exam and prompting a home visit from her English teacher.
Bethan decides to stand against Poppy in the Head Girl election. She’s the underdog but gets some surprise support from Lorraine Chapman, one of Poppy’s former acolytes.
With her mum Trina released from hospital and now working with Nana at the local bingo hall, Bethan finds herself free to experience the joys of teenage life. At school Bethan is full of herself as she tries to make a good impression on new girl Cam who she has a crush on. However, Bethan's home life is far from perfect as she becomes ever more combative with her abusive father, Dilwyn.
Bethan and her friends Lydia, Travis and the rest of their classmates go on an overnight visit to a local university. On her return home, Bethan meets the man Trina has been having an affair with, Perry. Despite her reservations, Bethan understands why her mum (Jo Hartley) believes they can both have a better future if she can find a way to be with Perry.
Bethan is taken aback when her mother suddenly announces that she's planning to leave Dilwyn and is concerned about the danger Trina will be in when her dad finds out about the affair. Meanwhile Bethan's relationship with Cam reaches a new level.
As Trina's mental health deteriorates, Bethan once again finds herself caring for her mother and hiding the truth about her life from her friends. However, Cam won't be fobbed off with her lies and wants to know the truth.
Bethan helps her mother Trina change her life but finds herself suffering as a result. Now having graduated from school, Bethan still can't find the courage to be honest with her friends Travis and Lydia. Instead she retreats into a lifestyle that is safe but threatens her own mental health. Can she break free?
