Netflix is introducing the new film Unfrosted. The streaming service dropped a trailer for the movie yesterday featuring Jerry Seinfeld and Melissa McCarthy. Unfrosted is directed, co-written by and stars Seinfeld in his directorial debut. The film tells the origin story of Pop-Tarts breakfast pastries, with Seinfeld and McCarthy playing rivals at Kellogg's and Post Cereal, respectively, in 1960s Michigan. Jim Gaffigan, Amy Schumer, James Marsden, Jack McBrayer, Thomas Lennon, Bobby Moynihan, Maria Bakalova, Max Greenfield, Bill Burr, Dan Levy, Christian Slater and Hugh Grant also star. The movie hits Netflix on May 3.