Without a final script, Kendrick was able to let her imagination run wild with possible plot lines.
"I would really love it if we were in space," Kendrick joked. "I personally would love to do one of those anti-gravity scenes. That's my dream!"
Before Kendrick sees what's in store for the Barden Bellas, fans can watch her crunch numbers in the action-thriller, The Accountant, opposite Ben Affleck.
In the movie, Affleck plays freelance accountant Christian Wolff, who has more affinity for numbers than people. Behind the cover of a small-town CPA office, Wolff cooks and uncooks the books for some of the world's most dangerous criminal organizations, but when the Treasury Department's Crime Enforcement Division, run by Ray King (J.K. Simmons), starts to close in on him, the body count starts to rise.
Kendrick plays Affleck's female counterpart in the movie, as a young clerk who catches on to Wolff's dealings.
Kendrick and Affleck's chemistry is evident on screen, and Kendrick revealed that the two first hit it off in real life a long time ago.
"I met him years ago at a telethon and I had to explain to him who everybody was that was, like, under 30," Kendrick explained. "He was just sitting next to me like, 'Hey, who are these people?'
I was like, 'Well, the Jonas Brothers are ...' and explained that to him."
According to Kendrick, that interaction put her in Affleck's good graces immediately when they got paired together for The Accountant.
"He was cool to me from the get-go because he was like, 'Oh yeah! You're that girl!'" Kendrick said.
From Affleck and George Clooney to Justin Timberlake and Ryan Reynolds, Kendrick has worked with some of Hollywood's hottest leading men, and the 31-year-old actress dished on who was the most down-to-earth.
"He's just so funny and cool and I feel like the world really got to see that with when he was doing Deadpool," she gushed. "He was doing all this stuff on social media and I was like, 'Oh this is your sense of humor like really being shared for the first time.' He's so dark and funny, which I love."
Of course, Kendrick isn't always working on sets with A-list stars, so ET asked what she does in her downtime, which led to this comical response.
"It's really hard not to say 'watch porn,' because that's what I want to say every time someone asks me that question," Kendrick joked. "You can air that or not air that. It's really up to you. My brain just goes, 'Say watch porn.'"