Question: What plot follows Barden University's all-girl a cappella group, The Barden Bellas, as they compete against another a cappella group from their college to win Nationals, and starred an actress known for her role of Alexis in the party film "Project X"?
Sentence (from "Alexis Knapp"): She is known for her role as Stacie Conrad in the musical films "Pitch Perfect" (2012) , "Pitch Perfect 2" (2015) and the upcoming "Pitch Perfect 3".
Relevant evidence: Yes