巴顿大学新人贝卡（安娜·肯德里克 Anna Kendrick 饰），意外加入学校的阿卡贝拉女子美声合唱团，该社团集结了又乖又坏又怪的各样女性成员，唯一共通点就是能清唱出犹如天籁的美声。社团成员包括：自认歌声最好，自信过人的“胖艾美”（蕾蓓尔·威尔森 Rebel Wilson 饰）、常常出言不逊又固执墨守成规，但其实焦虑不已的欧柏莉（安娜·坎普 Anna Camp 饰）、团员精神支柱克萝伊（布兰特妮·斯诺 Brittany Snow 饰）、性事无度的撩人歌姬史黛西（亚历克西斯·克纳普 Alexis Knapp 饰）、歌声动人的男人婆辛西亚萝丝（伊斯特·迪恩 Ester Dean 饰）、声音小如蚊子但即兴饶舌却令大家惊艳不已的哈娜梅李。
Beca’s Father: Beca. Beca, wake up. Funny, this doesn't look like your Intro to Philosophy class.
Beca: I'm posing an important philosophical question. If I don't actually go to that class, will it still suck?
Beca’s Father: Look, honey. College is... It's great. You get to create memories here, I see it every day. You just have to give it a chance. You've been here, what, a month now? Do you have any friends?
Beca: Kimmy Jin is my friend. No.
Beca’s Father: You gotta get out there, Bec. You gotta try something.
Beca: I got a job at the radio station.
Beca’s Father: Oh, great, that place. Yeah, it's dark and dirty and has like, what, those three weirdos who work there?
Beca: Well, four now.
Beca’s Father: You gotta try something new, Bec. Join one club on campus. And if, at the end of a year, you still don't wanna be here, you still wanna go off to LA and be P. Diddy, well, then, you can quit college. And I will help you move to LA.
Beca: Seriously? Yes, seriously. But I really need to see it, Beca. This is college. Join in.
Beca: You shout it loud, but I can't hear a word you say. I'm talking loud, not saying much. I'm criticized, but all your bullets ricochet. You shoot me down, but I get up. I'm bulletproof, nothing to lose, fire away, fire away. Ricochet, you take your aim……
Chole: You can sing! Dude! How high does your belt go?
Beca: My what? Oh, my God!
Chole: You have to audition for the Bellas.
Beca: I can't concentrate on anything you're saying until you cover your junk.
Chole: Just consider it. One time, we sang backup for Prince. His butt is so tiny that I can hold it with, like, one hand. Oops! Oh! Seriously. I am nude. You were singing Titanium, right?
Beca: You know David Guetta?
Chole: Have I been living under a rock? Yeah. That song is my jam. My lady-jam.
Beca: That's nice.
Chloe: It is. That song really builds. Gross. Can you sing it for me?
Beca: Dude, no. Get out!
Chole: Not for that reason. I'm not leaving here till you sing. So...
Chole and Beca: I'm bulletproof, nothing to lose, fire away, fire away. Ricochet, you take your aim fire away, fire away. You shoot me down, but I won't fall. I am titanium.You shoot me down, but I won't fall. I am titanium……
Chole: Oh, yeah. I'm pretty confident about all this.
Beca: You should be.
Beca: Still need to shower.
Chole's Boyfriend: You have a lovely voice.
Chole: Oh. Yeah. See you at auditions!