"Katherine, an ambitious New York City attorney, gets diagnosed with a concussion and must be monitored for forty-eight hours to make sure it doesn't get worse. Unfortunately, she forgot to update her emergency contact, so the person they call is her ex-husband, Tom. Unable to be left alone, Katherine reluctantly agrees to travel to Chicago with him for the holidays. But thanks to a blizzard, what should have been a quick plane ride turns into an antagonistic overnight misadventure that stirs up old feelings even as Tom prepares to propose to his girlfriend on Christmas Eve"-- Provided by publisher.