After a disastrous Valentine's Day, Emily Hornby heads to her grandmother for comfort and a pint of ice cream. After falling asleep on the couch, she wakes up in her bed - and it's Valentine's Day again. But the nightmare does not end there: every next day turns out to be the same damned holiday for Emily. She's stuck in a time loop, forced to watch her boyfriend Josh cheat day after day. In addition to regular cheating, Emily can't escape the mysterious Nick, whom she encounters every now and then, often in not the most pleasant ways. How many more days is she destined to watch indifferently as her life goes to waste? And when something good begins to happen during these terrible days, what will happen when the Universe stops giving her a second chance?