Dan is Emma's person. She's known it since the first time she saw him dressed in lederhosen on the tube.
On their fifteen year 'dateversary', Emma texts a list of everything she should have told Dan that morning.
Tell the kids to remember their homework…
And their gloves.
Can you defrost some sausages?
Emma just forgets to write the most important words of all - I love you - and by the end of the day everything changes.
Or does it? Emma is given the chance to rewrite their future - if she can just figure out their past…