Shiv, who recently decided to go sober, returns home to Dublin from London to attend her grandmother's funeral, but is faced with difficulties when the wake gets boozy.

Shiv searches high-and-low for a sponsor in Dublin as the rest of her family rationalises her staying indefinitely; Shiv organises a family dinner that turns into a disaster.

Shiv stumbles upon a family secret that shakes her efforts to settle into life at home; she also bonds with her new sponsor, who encourages her to do a moral inventory.

Shiv's family meeting turns into a car crash resulting in her parents revealing that they are in an open relationship, and her new job comes with complications.

The aftermath of the family meeting, with the rest of the family harbouring a growing animosity towards Shiv, puts her on a new path that's fraught with peril.

Shiv feels guilty for sleeping with Jack after waking up in his studio, and the rest of the Sheridan family starts to unravel.

Shiv's sobriety is tested more than ever when she feels Jack has abandoned her, and it becomes compounded when the growing tension in the family threatens to turn tragic.

Shiv prepares to return to London, much to the relief of the Sheridans, but her return is planned for the day of Caroline's engagement party.

Alex meets the Sheridans. Later, Shiv finds Tom in a compromising position, and Caroline launches into a romantic marathon... with difficult consequences.

Shiv learns about Alex's family, Bernie’s interview is published with disastrous results, while Ant makes a suspicious discovery. Meanwhile, Caroline and Rory collide.

Shiv has vowed to be her best self and has sworn off men. When she meets a sexy barista, her sensible birthday party with her family seems like a boring way to celebrate...

Shiv pushes things too far on a date with Alex, Caroline makes a shocking discovery about Rory, Ant is missing Bernie, and Tom gets some bad news.

Dinner with Max’s family takes a turn for the worse for Ant. Shiv receives some good news, and Bernie does her best to promote the memory of her murdered neighbour, Pam.

Tom’s family meeting goes awry when shocking secrets are revealed. Shiv has an important interview to focus on but she can’t seem to escape Jack. And Alex has a big question.

Jack and Shiv have a heart-to-heart in the woods, before Alex questions Shiv’s commitment. Max confronts Ant, and Bernie’s secret comes out - but not in the way Shiv expected.

As the house sale looms, Shiv prepares to start a new life. Can she leave her old demons behind - and can the family survive without her?