There’s something about that one person we date in our teens but never become intimate with. Why does a sexless relationship render us unable to stop carrying that person, the what if, with us into our adult life? For Heidi Johnson, Shane Hughes is her “one that got away.” Through the years, he has stayed in the back of her mind while she became an adult, a mother, and her own person. Meanwhile, Shane has lived a life of regret that he let Heidi go for the wrong reasons: fear and a misguided sense of not wanting to hurt either of them. When they reconnect online, the memories they've tried to suppress over the years return, reigniting the feelings never explored ‘back in the day.’ Will a school reunion in their home town of London, surrounded by old school friends, help the pair address the questions the years apart left unanswered? Or will they still be left with wanting more?