********WARNING Spoiler Alert**********************
1st Stage- Forming:
Barden University holds their annual a capella auditions after the beginning of the school year. Becca, Fat Amy, and the others audition for their spot on the Barden Bellas. After deciding on their new group members, Chloe and Aubrey hold initiation for the new Bellas. This is where the forming stage of their group begins. Each member of the group is introduced and get their first look at the life of a Barden Bella group member. Group rules are explained to each member, but obvious confusion and displeasure about the rules are evident.
2nd Stage- Storming:
The Barden Bellas hold their first meeting as a group. This is where they begin to really start to prepare to complete their task goal, winning the a capella national championship. The Bellas face their first internal conflict with one of their members breaking a group norm by sleeping with a Treblemaker. The conflict is dealt with awkwardly and with many of the group members unhappy with the outcome. Regardless, the Bella's begin to start practicing for the southeastern regional competition. They perform awkwardly as each member is still individually performing and not as a group but are still able to advance to the semi-finals.
3rd Stage- Norming:
The Bellas prepare for the semi-finals. Their performance has improved dramatically and the group has grown closer. Although tension still is evident between Becca and Aubrey, with Becca disagreeing with the song choice that Aubrey decided on. This leads to Becca doing an impromptu song change during the performance, leaving the group a little unsettled. Becca has now broken one of the expected group norms and is punished by being essentially kicked off the team. After Barden's Spring Break the Bellas get a call explaining that they will be performing in the Finals. The Bella's call for another practice and each member shows up, including Becca. Quarrels between the members break out, but in the end they end up making up and sitting down to finally discuss things and subsequently grow closer as a group.
4th Stage- Performing:
The Bellas sing a remix of the song "Just The Way You Are" by Bruno Mars. They are able to finally harmonize together and have found their groove as a group. The Bellas focus on completing their task and perform perfectly at the finals.
5th Stage- Adjourning:
The Bella's win the finals and have successfully completed their goal, ending their time as a group. The movie ends showing the remaining Bellas the next year starting off the a capella auditions, getting ready to start the process all over again.