In the movie, Melissa McCarthy plays the lead character, who totals her car, gets fired from her job and finds out her husband is cheating on her, all on the same day.
She then takes a road trip with her grandmother, who is played by Susan Sarandon. In the script, Tammy wants to escape to Niagara Falls.
Dan Aykroyd, Allison Janney and Kathy Bates also appear in the movie.
The film is expected to be released next July 4th weekend.