One Day is steeped in lore because of the story's loyal fandom of passionate followers around the world.
The series is adapted from the 2009 David Nicholls book of the same name with the Netflix version being told over 14 episodes. The narrative follows Edinburgh University students, Emma Morley and Dexter Mayhew, after they meet on 15th July 1988 on the night of their graduation.
The rest of the story takes place on that same day for the next two decades, as Emma and Dexter's lives change, they experience highs, lows and heartbreak, and the twosome come together and grow apart.
In the series, Dexter and Emma are played by The White Lotus' Leo Woodall and This Is Going to Hurt's Ambika Mod respectively.
Watch the One Day trailer. Post continues after video.
One Day didn't begin as an instant hit in the literary world, instead after its 2009 release, the book grew a steady following by word-of-mouth before becoming one of the best-selling books of all time.