House Party: Tonight’s the Night

Chris and Dylan clash in a school rap battle, setting the stage for the rest of the story. Autumn Rose gets into an argument with her boyfriend Quentin, and she is comforted by Precocious during the dispute. Chris approaches Autumn after the battle to compliment her, hinting at his crush.

Chris returns home to find a new red 1985 Camaro gifted by his father for college. His parents receive a phone call about a relative's death, and they decide to leave Chris alone at home to attend the funeral. The moment foreshadows the party that will unfold in their absence.

With the funeral looming, Chris's parents leave him alone in the house for a few days. This separation creates the opportunity for Dylan to push his party plan without supervision. The house becomes the stage for their upcoming music-industry opportunity and chaos.

Dylan pushes to break into the music industry by throwing a party at Chris's house. He hints at a potential record executive visiting and seeds the plan on social media. Chris is reluctant but agrees, hoping it could be a stepping stone.

Across the street, Victoria flirts with Chris and plans to attend the party for a sexual hookup. Autumn arrives with her friend Morgan and joins the crowd, setting up a tension-filled dynamic. Quentin's presence adds friction as he confronts Autumn at the event.

The party starts and spirals out of control as more guests arrive. Dylan receives another call about a possible record executive attending, though no one knows what he looks like. The atmosphere grows louder as the night unfolds.

Autumn arrives with Morgan and mingles while Precocious meets Jerry, a socially awkward boy. They have sex in the bathroom, and the toilet collapses into the living room, causing chaos. The incident accelerates the party's chaos and spurs a relocation plan.

Chris and Dylan think they’re meeting a record executive, but the man in the suit is actually Gary, the limo driver. Realizing the misunderstanding, they decide to move the party from the inside to the backyard to lessen the damage. The party's energy shifts outdoors.

In the backyard, Precocious and Jerry are celebrated by peers for surviving the earlier chaos. Autumn sees Quentin talking to another girl, prompting Chris to take Autumn to dance. Victoria makes another romantic advance on Chris and is rejected again.

Autumn breaks up with Quentin by returning his chain, but he grips her arm and Chris steps in. A fight erupts as Quentin lands a harsh uppercut, knocking Chris out while other guests hurl drinks at Quentin as he leaves. Dylan and Autumn help Chris back to his feet, and tensions about the party and their futures surface between Chris and Dylan.

Autumn stays to help clean up, and Dylan sells his car to hire a cleaning crew and repair the damages. Chris and Dylan eventually reconcile, and Chris and Autumn share a kiss in the new Camaro, marking a personal moment amid the chaos.

The next morning, Chris's parents return home and discover the aftermath. Kennison Scott, the real record executive, reveals he saw a video of their performance online and is impressed. Kennison offers a development contract and a trip to New York City to meet the label owners. Chris's mother also sees the video and the house damages.

In the mid-credits scene, Chris and Dylan arrive at the record label and meet Kid 'n Play, who praise their party video and their moves. They caution them to rethink some antics, foreshadowing how the industry will respond to their hype.