After receiving a troubling call from Iris, Selby rounds up Gloria and Lenny for a road trip in search of Costello, who is close to her breaking point after receiving upsetting news. Costello agrees to abandon her dreams and lead an ordinary life for Iris's sake, but the crushing weight of her disappointment won't shift, and she contemplates a different ending.

After Costello receives surprising news that might transform her circumstances, she and Iris tie up some loose ends before leaving London, confident that they will soon return. However, as mounting pressure online threatens to take away their escape route, Costello spirals back into bad habits. After the visit from Fen, Selby opens up about his father during a heated conversation with his therapist. Gloria struggles to come to terms with becoming a mother, with dangerous consequences.

Costello has found a safe space to land, but she must continue to hustle to make a living when she realises what it will take to stay in London. As he pines for a phone call from Costello, Selby acclimates to his new reality and reluctantly makes a new friend. Gloria asks for Costello's help as she wavers over a life-altering decision. Iris is angry at being moved to yet another new home when disaster strikes, propelling both Costello and Iris into more uncertainty.

When a visit to her family awakens old demons, Costello confronts a long-kept secret from her past and finds the courage to leave Selby. Concerned by his behaviour in Bruton, Allegra arrives to help Selby clean up his act, much to Selby's frustration. Not knowing when they will see one another again, Selby and Costello say an uncertain goodbye. Gloria receives surprising news and is presented with a decision she doesn't feel ready to make.

In Bruton, Costello is finally able to hold a part-time job and live her best life; but as cracks in their family unit begin to form, their seemingly perfect new life begins to deteriorate - with devastating results.

After reuniting with an acquaintance from prison, Selby comes to Costello with a proposition.

While working the peep show, Costello is approached by a journalist offering an exciting opportunity. Selby revels in his newfound freedom.

Facing eviction, Costello scrambles to find housing by nightfall; after a stint in prison, Selby gets mixed reactions as he returns home.