Regan Crawford is having lunch with her longtime friend, Becky Archer, who reveals that she will marry her boyfriend, Dale. Although Regan feels a twinge of jealousy at her friend's engagement, she still quietly informs their two other friends Gena Myers and Katie Lawrence about the news. Regan Crawford is the poised, anxious one, while Becky Archer carries an unstoppable optimism about the future, and Gena Myers keeps a sharp, unapologetic edge that masks deeper insecurities. Katie Lawrence remains a steady presence among them, though she isn’t anchored to the same spotlight as the others.
Six months later, the four women are buzzing with plans for Becky's upcoming bachelorette party. Gena flies from Los Angeles to New York City, and the group converges at a hotel where Katie drops a bombshell: Gena has brought cocaine for everyone to share. The dinner becomes a swirl of old memories, flirtations, and sharp quips as Gena runs into her ex Clyde flirting with Dale’s younger sister, and Katie crosses paths with Joe, a former classmate and a pot dealer. Trevor, the best man, delivers a showy, often cringe-worthy toast, and Gena’s bold toast about Becky’s high school days sets a tense mood in the room.
Afterward, the celebrations spill into the suite. A coworker arrives to perform a striptease for the group, but Becky’s pride buckles when the host crudely calls her “Pigface,” a cruel nickname from their school days. Becky leaves the party, and Regan, Gena, and Katie stay behind, turning the night into a blur of drinks and cocaine. The trio accidentally damages Becky's bridal gown, a nosebleed staining the fabric in the process, and Regan watches the situation escalate with a mix of frustration and fear.
A plan forms in the night: Regan reaches out to a friend who runs a bridal store and manages to get it open in the middle of the night. They search for a dress, but Becky's gown remains elusive. Katie reveals she can sew, which sparks a new hunt for thread and a sewing machine while Trevor texts Regan to join the group at a strip club where the men have gathered. In a backstage moment, Gena takes the dress into the club’s bathroom to try to salvage it, where a stripper turns the dress into a towel and even a makeshift toilet paper holder, a moment that fractures the group’s fragile trust.
Tensions flare as Regan accuses Gena of wanting to confess everything to Becky, and in the heat of the argument, Gena admits she had an abortion years ago. Gena leaves the club with Clyde and the dress, while other pairings intensify: Joe tries to woo Katie, Regan beds Trevor in the club’s bathroom, and Clyde and Gena reminisce as they sleep together. Joe and Katie spend the night at the hotel pool, where Katie reveals a previous suicide attempt, adding another layer of gravity to the night’s debauchery. Regan learns that Becky’s high standards cover for Regan’s bulimia, a truth Becky has kept secret since their school days.
As dawn approaches, Becky calls Regan to talk in private, and the two share a tender but fragile moment. Regan begins to tell Becky about the dress, but Becky’s mother arrives, and the trio must switch into wedding-mode with nerves taut and hearts racing. Meanwhile, Gena and Clyde head to the wedding, and the party planners scramble to locate the missing gown. Katie overdoses on Xanax, and Regan forces her to vomit, accidentally painting Regan’s own dress with tears, worry, and a pulsing sense of urgency. To buy time, Regan persuades Becky to ride to the ceremony in her pajamas and wear the recovered dress upon arrival, a plan that is equal parts risky and intimate.
The moment of truth arrives when Becky walks down the aisle. The dress—now clean except for a tiny bloodstain—makes its way to the ceremony as Regan and Gena sit on a bench, quietly watching the moment unfold, with Katie arriving late to join the celebration. At the reception, Joe and Katie share a kiss, Regan wrestles with idealized friendships, and Clyde delivers an unapologetically crude speech about last night’s exploits with Gena. In the end, the four women find a path back to each other, letting the hurt soften as they move, reconcile, and dance together in a scene of renewed friendship and hard-won forgiveness.
