An Irish woman and an American man make a bloody mess as they struggle to fall in love in London. Clumsy lust, instant pregnancy, and genuine disaster provide the foundation for this flaming hovel of a relationship.
In a mess of events always in danger of slipping out of their grasp, Rob and Sharon must also learn to deal with her largely awful friend; his eccentric Bostonian mother; and attempt to navigate the choppy waters of their ever-more-complicating lives.
Can Sharon, "an extraordinarily good-smelling woman" and Rob, "a sturdy love-maker" steer through the increasingly thorny situations they find themselves in and still find time for an emergency shag in a stairwell? Prepare to find out.
Rob picks up where he left off last time, with an unexplained receipt for the morning after pill in his hand and a lot of questions for Sharon. Too drunk at the time to remember what she did, Sharon dodges Rob's interrogation and goes to see Nico perform with his band to find out the truth. Will she tell Rob what actually happened? The issue is unexpectedly forced when one of the kids has an accident.
Rob and Sharon are still on shaky ground with each other and face challenges in their work lives too. Sharon returns to teaching, leaving Rob looking for a new job while in charge of the school run, where he is immediately embroiled in playground politics. Elsewhere Sharon's brother Fergal is moving to Spain, and while Rob goes to see Dave recovering in rehab, could his own addiction issues be rearing their ugly head?
Rob and Sharon find themselves facing financial difficulty after hearing bad news from the estate agent. Rob's at an all-time low and tries to battle his weight gain by joining a gym. Sharon's friend Fran is also dealing with vanity issues and tries to kick start a new life with plastic surgery. A last ditch attempt to resolve their money problems results in Rob being humiliated - will it lead him crawling back to his old job?
Seemingly back in the swing of a fully functioning relationship, Rob and Sharon receive a very surprising dinner invitation from estranged couple Fran and Chris. Meanwhile, Fergal travels back to London to give an update on his unsatisfactory family life in Spain. Sharon has a check-up with a less than empathetic doctor where it's revealed that she's now pretty low in the egg department. And Rob's dark secret is uncovered by Chris.
Rob returns to his job at Braeband stating he is just back from 'holiday in Canada', while bad news pulls Sharon back to Ireland. With Sharon away, and left home alone to look after the children, Rob's life continues to spiral out of control. Unhappy with the situation at his family home Chris decides, in typical style, to confront his nemesis.
Rob and Sharon are in Ireland to say goodbye to Sharon's dad. Rob's utterly irrepressible mum Mia travels from America to pay her version of respects. With Fran reeling in shock, and Rob still unable to find the right time to talk about his almost-secret collapse, all roads are leading to a dramatic series finale.