The cinematic journey kicks off with Ruby, portrayed by Camila Morrone, as she exits a nightclub to call her mother, Julie Richman (Alicia Silverstone), for a ride home. This surprising turn of events comes after Ruby had previously reassured her mother that she was with her boyfriend, only to now confess the deterioration of their relationship and her intent to go to bed in frustration. In response, Julie takes this opportunity to share a story from her own youthful days.
Transported back to the lively 1980s suburban America, Julie's tale is filled with cascades of big hair, vibrantly bold fashion, and the rebellious spirit of the time. As a teenager, Julie (Jessica Rothe) lived under the roof of her parents, Diana (Judy Greer) and Steve (Rob Huebel), frequently hanging out with her close-knit group of friends: Karen (Chloe Bennet), Loryn (Ashleigh Murray), and Stacey (Jessie Ennis). The four would spend their days at the local mall, often belting out their favorite songs, including a spirited version of "We Got The Beat." They adhered to a largely unspoken rule: to never cross the Encino-Hollywood border, a threshold that marked the realm of the punk rock crowd.
During the same era, Randy (Josh Whitehouse) and his band, featuring Jack (Mae Whitman) and Sticky (Mario Quinonez Jr.), were creating waves with their band called Safety Recall. Their performances attracted throngs of enthusiastic teenagers but were frequently interrupted by police coming in to disperse the gatherings.
As Julie's narrative unfolds, we are introduced to her boyfriend Mickey (Logan Paul), a charming jock who occupies the spotlight during school events. His popularity is so profound that his name is boldly displayed on a massive banner at a pep rally, accompanied by the ever-catchy tune "Hey Mickey." With the announcement from Principal Evans (Randall Park) about the senior prom happening in a month's notice, which will be broadcast live on K-Rock, the excitement in the air becomes palpable.
Julie soon finds herself caught up in Mickey's whims when he invites her to the locker room for what she hopes would be a romantic proposal. Instead, he stages a prank with his friends to moon her in hopes she'll accept his invite to prom. Although startled by the sudden turn of events, Julie agrees to attend with him.
As Julie and her friends relish in a beach day, she starts to envision her future distinctly apart from her peers, inspired by "Girls Just Wanna Have Fun." Fate leads her to cross paths with Randy, who impresses her greatly by chasing off a bird snatching her nachos and showcasing his striking physique. Meanwhile, Loryn brings a mysterious date to their upcoming party, which prompts Sticky to alert Randy, setting the stage for subsequent interactions.
The night of the costume party takes an unexpected turn when Randy, Jack, and Sticky crash the event, yet chaos is imminent. Initially disinterested, Julie’s mood quickly shifts when her gaze lands on Randy. A confrontation ignites between Randy and Mickey's friends over an inappropriate comment directed at Jack, leading to their ejection from the party. However, Randy concocts a plan to re-enter by donning a passed-out attendee’s costume, persuading Julie to join him for an exhilarating night of fun, happily shouting, "You Might Think." As they venture out with his friends, Stacey starts with them but soon departs, leaving Julie and Randy to enjoy the Hollywood nightlife together. Later, Randy charms Julie with a romantic kiss.
The dawn reveals a different side to their narrative: Mickey shows up at Julie's front door, eager to patch things up, yet she is resolute in her decision to end their relationship and skip the prom. Engaging in a jazzercise class with her friends, they misinterpret her somber demeanor as grief over Mickey, unaware that her heart is now inclined towards Randy, fueled by an array of anthems like "Just Can't Get Enough," "Material Girl," "I Can't Go For That," and "Tainted Love." With her breakup with Mickey established, her friends start to drift away, leaving Julie grappling with her choices.
As Julie immerses herself into Randy's world, she begins to adopt his edgy punk style. Her parents remain oblivious to her changing interests, questioning her about her evening plans after discovering her story about a movie night is fabricated. Despite being grounded, Randy continues to visit secretly, during which Julie shares her aspirations of attending a prestigious fashion school in New York City. While romance flourishes, Randy's bandmates grow restless with his diminishing involvement, causing Julie to withdraw from her friends in favor of time spent enveloped in Randy's charm and allure, grooving to "Take On Me."
When Diana and Steve invite Randy over for dinner, it becomes an uncomfortable affair. Despite an initial reluctance from Jack regarding Randy’s fitting in, he accepts, only to feel underappreciated after witnessing Diana and Steve's candid, dismissive comments about his lateness. Overwhelmed, Randy leaves the dinner, prompting Julie to confront him about his unexpected exit. The simmering tensions between them are often fed by Randy’s insecurities about belonging in Julie’s seemingly perfect world.
Julie's bond with Stacey remains unbreakable, indicated by her thoughtful birthday wishes and an invitation to a skating rink celebration. However, the party spirals out of control when Mickey, now dating Karen, steals the spotlight from the birthday girl, marginalizing Randy, leading to yet another row between Randy and Mickey, and ultimately resulting in Julie and Randy's split.
Amidst a tumultuous season of emotions, Julie receives a surprise proposal to be Mickey’s prom date again, underscoring her changing connections—now that Mickey and Karen are on different paths. Meanwhile, Randy channels his feelings into music, reuniting with the band to perform "Boys Don’t Cry."
During a moment of reflection, Julie seeks reconciliation with Stacey and is relieved to find understanding. Stacey shares her acceptance to Dartmouth College, a dream that also aligns with Karen’s aspirations. Through their conversations, it becomes clear that Julie is beginning to carve her own lane—one that doesn’t conform to others' expectations.
In a touching moment of familial support, Steve calls Julie to witness a significant news broadcast showcasing astronaut Sally Fine's groundbreaking space journey. Watching, Steve uses the occasion to inspire Julie, highlighting Sally’s roots in Encino as a metaphor for carving her destiny.
As prom night escalates into celebrations, Randy and his friends take the stage while Mickey crowns himself and Julie as the overall iconic couple—a title that holds little appeal for Julie, whose heart lies elsewhere. The tension hits a peak as she clearly rejects Mickey’s attempts at mending things, surprisingly choosing to reconnect with Karen, leaving Randy and his friends to question their standings.
The night culminates when an impromptu performance of "I Melt With You" unfolds, leading to Julie joining Randy on stage in a beautiful manifestation of unity and strength. At this moment, it is evident that Jack and Karen have established their own burgeoning connection, hinting at new beginnings.
Fast forward several years, and Julie is sharing her life story with Ruby, illustrating how her journey has been one of unforeseen twists and turns. Inspired by her mother's narrative, Ruby begins to map out her own future, filled with promise and opportunity. In the present day, Julie reflects on a cherished album from Safety Recall, a symbol of the memories that have woven into her life's fabric.
Ultimately, Julie finds herself launching her fashion line, Mesh & Lace, at the young age of 21 while embracing life in the Hollywood Hills. Meanwhile, Randy carves out a successful music career, acquiring multiple Grammys yet remaining true to his punk roots by declining to accept them. His friends thrive too, with Stacey amassing wealth in Silicon Valley and playfully ghosting Elon Musk; Karen establishing a thriving business with her "Resting Bitch Face Botanical Serum"; Jack creating chart-topping music, including a hit for Justin Bieber; and Loryn becoming a staple in every 90's Janet Jackson music video, effectively initiating the flash mob phenomenon. On the other side, Mickey and Sticky carve their paths; Mickey submits annual audition tapes for "The Bachelor," only ever met with a restraining order from the producers, while Sticky continues to tour with a Safety Recall tribute band, persistently remaining entrenched in the music world.
In a narrative that exemplifies how the choices we make shape our futures, Julie’s story stands as a powerful reminder of resilience, love, and the lasting foundations of friendship. Meanwhile, Diana has made shrewd investments in Macintosh, leading her and Steve to become millionaires living life splendidly—sipping Chardonnay, creating “home movies,” and relishing the rewards of a life well-lived.
