It's July 15, 1988 and the graduation ceremony for Emma Morley and Dexter Mayhew. Although college is coming to an end, the two students speak for the first time that day and go their separate ways the next morning. Where will they be on this one ordinary day next year, and the year after that, and every year that follows? In each episode, Dex and Em are a year older on this one specific date as they grow and change, together and apart, and experience joy and heartbreak.