Let alone to live the lifestyle metropolis, to the big city was Tim Lippe (Ed Helms) has never been, but soon it all will soon change. Tim will soon go to Cedar Rapids to represent where he worked in a national convention.
While working at an insurance company but Tim never leave his hometown. Sparkling big city is just a dream for him. When Tim receive this heavy task, Tim had hesitated. He did not dare to imagine what he would face today in Cedar Rapids later.
Unexpectedly, it turns out in a short time Tim Lippe has brought big city lifestyle. Tim also realized that the task this time is more than represent his company in an insurance company convention.