In the opening scene, we find ourselves swept into a dramatic moment as a voice-over narrator, Bill Kurtis, tries to add to the legendary tale of Ron Burgundy, portrayed by Will Ferrell, who is desperately swimming away from a menacing shark. However, the narrator shifts the focus to a bustling 1980 New York City, where Ron and his wife, Veronica Corningstone (Christina Applegate), are seen walking together. When a passerby remarks on Veronica's appearance, she turns to Ron, asking if he’ll respond, to which he reluctantly admits the truth: Veronica's allure draws attention from other men.
As the couple anchors the news at the World Broadcast News station, they soon find themselves called into a meeting with their boss Mack Tannen (Harrison Ford). Mack makes a shocking decision—promoting Veronica to the position of a full-time anchorwoman while firing Ron, branding him the "worst anchorman" he has encountered. Ron is baffled and, in a montage of unfortunate events including shouting the news, cursing live on air, and even sneezing on the camera, his shortcomings are showcased. This leads to a heated argument at home with his wife, during which he even delivers cruel words to their son, Walter (Judah Nelson), insisting that his dreams of becoming an astronaut are futile.
Fast forward six months, we find Ron now disgraced and divorced, working as an announcer at Sea World in sunny San Diego. In a state of despair, he stands before a crowd while holding a drink, lamenting his fall from grace, making inappropriate remarks, and getting booed off stage. In a moment of desperation, he contemplates suicide but is saved by Freddie Shapp (Dylan Baker), who offers Ron a glimmer of hope with a job proposition at the Global News Network. Intrigued by the lucrative paycheck, he commits to the job, gathering his old news team along the way.
First, he picks up Champion "Champ" Kind ([David Koechner]), who now runs a fried chicken joint. Next, they recruit Brian Fantana ([Paul Rudd]), who is off photographing adorable kittens but finds the prospect of working in a live nude strip club irresistible. The last reunion involves Brick Tamland ([Steve Carell]), whose supposed death turns out to be a misunderstanding. During their chaotic road trip to New York, hilarity ensues as they tackle mishaps in an RV, reminiscing about their past while Brian casually notes that no one is actually driving.
Upon arriving at GNN, they meet the network’s glamorous star, Jack Lime (James Marsden), who immediately shows disdain for Ron. Their new boss, Linda Jackson (Meagan Good), astonishes them with her authority and modern leadership style, making it clear she’ll put up with none of their antics. After securing a graveyard shift, their first challenge arises: Ron vows to compete against Jack's ratings in a high-stakes contest.
Amidst male camaraderie and frantic news reporting, we witness Ron attempting to salvage his career while grappling with jealousy about Veronica’s new relationship and her psychiatrist Gary (Greg Kinnear). After a series of absurd tribulations—including a memorable car chase broadcast that captures the public's attention—the news ratings soar, only for Ron to face his own moral dilemmas.
With misguided decisions marking his journey, Ron eventually relocates to a lighthouse after losing his job again and going through a period of blindness. His friends rally to help him revitalize his life, and he finds solace in a playful bond with a baby shark, which he and Walter name Doby. However, Veronica’s decision to suppress Ron’s healing leads to a significant rift between them.
Once Ron regains his sight and returns to the spotlight, he learns the value of friendship and humility. Ultimately, as the storyline unfolds, an epic showdown ensues—complete with an absurd array of rival news crews coming together in a chaotic brawl. Ron’s efforts culminate in a heartwarming reunion with his son during a piano recital, not before he confronts his past choices and reconciles with Veronica amidst the chaos.
As the narrator wraps up the saga, the gang reaches new heights of fame, leading to Brick's wedding with Chani Lastnamé (Kristen Wiig). The family joy is infused with laughter as Doby reappears, culminating in Ron’s comical, frantic attempts to escape. Ultimately, Ron finds himself saved by his loyal dog, Baxter, solidifying their friendship and shared adventures.
In a humorous post-credits scene, the gang is busy preparing for their first broadcast, proving that their absurdity and camaraderie could never be extinguished.
