When Frankie returns to Glasgow to investigate a mysterious message left by her dying aunt, her sudden reappearance rocks ex-girlfriend Cat, who’s re-entering the dating scene after Frankie left her heartbroken two years ago. Will her blind date with policewoman Sam be ruined? Aspiring actress Tess has a humiliating run-in with her ex-girlfriend, but things start to look up when she finds herself being hit on by a gorgeous (and supposedly straight) TV presenter.

Frankie puts herself in danger as she follows a lead that might unravel the mystery of her past. Fate gives Cat a second chance when she runs into policewoman Sam, but is she really ready to forget Frankie? Meanwhile Tess makes a fool of herself on live television and it becomes clear that Lou is nowhere near ready to go public with their relationship.

Cat is shocked when she finds Frankie has been taken on by her firm. Tess is dismayed when Lou refuses to answer her calls.

Cat puts her relationship on the line when she lies to Sam, while a jilted Tess ventures into the world of internet dating. After a run in with her uncle, a self-destructive Frankie finds herself on the wrong side of the law, forcing her to turn to the unlikeliest of allies for help, but her troubles are only just beginning...

Tess’s 30th birthday is approaching and she’s desperate to ignore it but her friends have other ideas. As Ed organizes her surprise party, his desire to tell her his true feelings reaches fever pitch, but could their friendship survive if Tess knew the truth? A work assignment brings Frankie and Cat closer together as they take a walk down memory lane, but as their feelings grow deeper, a shocking revelation drives Cat back in to Sam’s arms.

Frankie is left reeling when she finally discovers the truth about her childhood. Cat makes a big choice about her future with Sam but her decision is put to the test when she discovers that Frankie is planning to leave town for good. Elsewhere things start to look up for Tess when she gets an audition, only for a broken lift to throw her chance into jeopardy.