The Acapella Women's Bel Canto Choir of Barton University led by Becca (Anna Kendrick) finally made the mark and was invited to sing honorably at the birthday party of the President of the United States. Who knew that during the performance,"Fat Amy"(played by Rebel Wilson) unexpectedly walked out, causing panic in the audience, stigmatizing the choir, and being banned from performing publicly! The last chance to turn the tide is to win the Acapbela World Championship. Can they defeat their strong rival from Germany, regain their lost reputation, and dominate the Acapbela world...