When Elizabeth's husband dies, leaving her with crippling debt, the only person she can turn to is her friend, Jo. Soon Jo has called in her daughter, Lucy, to help save Elizabeth from bankruptcy. Leaving her old life behind, Lucy is determined to make the most of her fresh start. As life slowly begins to return to normal, these three women, thrown together by circumstance, become fast friends. But then Jo's world is turned upside down when she receives some shocking news. In search of solace, Jo and Elizabeth find themselves enjoying midnight dips in the freezing Irish Sea.

Life in Dublin hasn't worked out quite as planned for friends Melissa, Steph and Eilis. Melissa has a successful career, but she's a mess of insecurities. Steph is lonely, walking on eggshells around her philandering husband and angry teenage daughter. And Eilis, an A&E doctor, is just going through the motions with her long-term partner, Rob. Is it ever too late to take charge and live your life on your terms?

Esme has run the guest house for as long as anyone in Ballycove can remember. But in her declining years, her sight is failing, and when she has a fall on the eve of the summer season, she is forced to take a back seat for the first time in her life. From her chair in the entry hall, not much passes Esme by. There's Cora, the wife visiting indefinitely... without her husband; Niamh, the city professional with a life-changing decision to make; and Phyllie, the grandmother whose family is slipping away from her.

Carly Cooper is 30, single and after coming close to saying ‘I do’ to six different men, she’s wondering if she accidentally said ‘goodbye' to Mr Right. But there is a problem. Her ex-boyfriends are scattered all over the world and Carly lives in 1999: an era before Facebook, Google, smartphones, 4G and Broadband, when it was impossible to track people down with a few clicks of a mouse. On a mission to discover if she walked away from her 'happy ever after', Carly quits her job, her flat, her whole life and sets off on a quest to track down all the men she has ever loved.

Tom is a teenager and blends into the background of life. After a row with his dad and facing an unhappy future at the dog food factory, he escapes to the library. Tom unwittingly ends up with a bagful of romance novels and comes under the suspicion of Maggie. Maggie is a pensioner and has been happily alone for 10 years, at least that's what she tells herself. When Tom comes to her rescue, a friendship develops that could change her life.