Tammy can be funny brash unrestrained, For Tammy, a burger-joint waitress, a bad day keeps getting worse. She wrecks her car, loses her job and finds her husband in a compromising position with their neighbor. It's time for Tammy to hit the road, but without money or transportation, her options are limited. Her only choice is a road trip with her grandmother, Pearl, who has a car, cash and an itch to see Niagara Falls. It's not the escape  Tammy had in mind, but it may be what she needs