It's 1995, and Alex Dean has it all: a spot at Cambridge University next year, the love of an amazing woman, and all the time in the world ahead of him. That is until a run-in with a former childhood bully sees him bruised and bloody and almost drowning in the Thames. He awakes the next day only to find he’s in a room he’s never seen before, with no idea of how he got here. A glimpse in the mirror tells him he’s older—much older—and has been living a rather hard life, his features ravaged by time and poor decisions. He snatches a newspaper and finds it’s 2010—fifteen years since that night by the river. Alex wakes the following morning to find it’s now 2019, another nine years later. But the next day, it’s 1999. Never knowing which day is coming, he begins to piece together what happens in his life after that fateful night by the river.