That night, Rich and his friends go out to a local club called the Phoenix and invite DJ along. DJ takes to the dance floor, hoping to impress April and upstage Grant and the Gammas, all of whom are also in attendance. Despite the animosity between DJ and Grant, the Gammas recognize DJ's skills as a dancer, and the Gamma chapter's president Zeke (Laz Alonso) invites DJ to pledge for Mu Gamma Xi. DJ turns down both Zeke's offer as well as an offer from the Theta Nu Theta chapter's leader Sylvester (Brian White).

After learning that April is a student history tutor, DJ signs himself up for tutoring so that he can spend time with her. The two slowly begin a friendship, and DJ takes April out to dinner. During their date, April discusses the importance of black fraternities and sororities with the clueless DJ, and tells him to visit Heritage Hall on the campus' Greek Row. At Heritage Hall the next day, DJ learns about the significant number of African-American historical figures and celebrities who were members of various Greek-letter organizations, and decides to pledge for the Theta chapter along with Rich and their friend Noel (Jermaine Williams). April eventually leaves Grant for DJ, angering her father, Dr. Palmer (Allan Louis), the school's dean and a Gamma brother himself.

After "crossing over" to become official Theta members, DJ, Rich, and Noel join the Thetas' step team. Dismissing their traditional step moves as old-fashioned, DJ teaches his frat brothers a few of his old krumping moves. DJ does not notice that, while he is practicing a few of his brother's old dance moves, one of the Gammas is secretly videotaping him so that their team can learn DJ's steps.

Sly disapproves of DJ's attempts to modernize the Thetas' steps, and challenges DJ to a battle at the Phoenix between his line brothers and DJ's; the new moves against the old. DJ's line brothers lose the competition due to DJ's show-boating, although Sly agrees to let DJ teach the team some new moves as a compromise.

A few of the Gammas' run a background check on DJ, and learn about his criminal past. This information is forwarded to Dr. Palmer, who has the school's Ethics Committee suspend DJ for the remainder of the year, preventing him from stepping at the nationals. Dr. Palmer later offers to reinstate DJ, with the provision that he stop seeing April, an offer DJ refuses. When April learns from her father why DJ has been suspended, she confronts DJ and learns first-hand the story behind his arrest. DJ's aunt Jackie, an old girlfriend of Dr. Palmer's, intervenes and confronts the dean herself.

The final round of the nationals stepping competition ends in a tie between the Thetas and the Gammas, and each team is required to choose a dancer for a head-to-head competition. The Gammas have secretly recorded DJ's practices, and choose Grant, who has learned all of DJ's steps, as their dancer. However, DJ, reinstated thanks to his aunt's help, shows up in time to be chosen as the Thetas' dancer. Going first, Grant does DJ's exact routine from the tape. After Grant finishes, DJ matches Grant move for move, tossing in something the Gammas didn't get on tape: the move Duron performed to win his last competition with the Goon Squad.

The Theta Nu Theta team is declared the winners of the competition, and DJ is mobbed by his frat brothers as April runs out to kiss him. The scene is captured in a still black and white photo, which is added to the wall at Heritage Hall.