Busy mum of twins Liv is looking forward to a week at the Beach Hut in Devon, even if she feels that something's not right between her and Matt. She's sure he's just too busy at work to join them on their summer holiday, not that he wants time alone. Baz loves having his family to stay by the sea, but when an unexpected guest arrives, he finds himself torn between the past and the future. Still reeling from a break-up, all Sofia wants is a quiet summer - until she meets Baz and her plans are turned upside down. She knows she's rushing into things, but could this week at the Beach Hut be the start of something new? And back home, Matt might be missing Liv and the children, but when an old friend appears he finds himself distracted. What does she know about his family's past that she's not letting on. As tensions rise over seven days in summer, the lives of the holidaymakers begin to take an unexpected turn.