Emma Morley and Dexter Mayhew spoke for the very first time on 15th July 1988, the night of their graduation. The next morning they went their separate ways, but where will they be on this one ordinary day the next year, and the year after that, and every year that follows?

Each episode finds Dex and Em one year older, on this one particular date, as they grow and change, move together and apart, experience joy and heartbreak.

Based on the global best-selling book by David Nicholls.