"Love, romance, second chances, fairy-tale endings ... these are the things Annika Dev believes in. Her app, Make Up, has been called the 'Google Translate for failing relationships.' High efficiency break-ups, flashy start-ups, penthouses, fast cars ... these are the things Hudson Craft believes in. His app, Break Up, is known as the 'Uber for break-ups.' It's wildly successful--and anathema to Annika's life philosophy. Which wouldn't be a problem if they'd gone their separate ways after that summer fling in Las Vegas, never to see each other again. Unfortunately for Annika, Hudson's not just moving into her office building, but into the office right next to hers"--