For twenty years, Ivan the gorilla has captivated audiences as the main attraction at the Big Top Mall and Video Arcade, a circus nestled within a shopping mall in Central Florida, managed by the ringmaster Mack. Living in confinement alongside his fellow animal companions — the sage Stella, the pampered poodle Snickers, the feisty chicken Henrietta, the toy fire truck-riding rabbit Murphy, the anxious sea lion Frankie, and the chatty parrot Thelma — Ivan forms an endearing bond with a stray dog that wanders into his cage. The animals are cared for by George, who frequently visits with his daughter Julia. Julia shares her old crayons with Ivan, allowing her to interpret his drawings and bestowing the name "Bob" upon the stray dog.
As the mall’s business begins to plummet, Mack brings in a young elephant named Ruby from a failing circus, capturing the audience's interest as the new star. However, Ivan, feeling envious, is initially reluctant to welcome her. Following Stella's decline and inability to perform, Ivan encourages the timid Ruby to engage with the audience independently. He recounts his past, revealing to Ruby how he was adopted as a baby by Mack and his wife Helen, and the series of events that led to his animalistic behavior pushing Helen away. Mack’s purchase of the mall transformed it into a circus, and with Stella's eventual passing, she urges Ivan to ensure Ruby's future freedom.
In an attempt to liberate Ruby as Mack starts to train her, Ivan becomes resolute. Julia showcases Ivan's art to Mack, sparking excitement for a new act, but despite attracting a crowd eager to witness his work, Ivan remains unyielding. Under the cover of night, Ivan and Bob cleverly deceive the security guard Castello and orchestrate an escape for the rest of the animals, although Snickers opts to stay behind. Their adventure across the highway leads to the disappointing realization that their new “forest” is simply an urban intersection. When Castello informs Mack of their escapade, he finds the animals and brings them back to the mall, warning Ivan of the dangers lurking outside for Ruby. He discreetly dismisses Castello from his duties while telling George to keep the incident under wraps. Ivan shares memories of a free life in the jungle, where he played with his sister Tag until poachers took his father, leading to his capture.
Preparations for the day’s show ensue, with Murphy lamenting that “no one drives a yellow fire truck!” as he exhibits a new vehicle. Utilizing Julia's finger paints, Ivan creates a vibrant mural in his enclosure, much to the delight of attendees. Reporter Candace Taylor arrives to investigate the alleged animal escape, but Mack asserts they are safe, promoting a live show that reveals Ivan’s breathtaking artwork of his jungle home. Julia perceives Ivan’s longing for freedom and, with Candace’s help, mobilizes public support for the animals. Protesters gather, demanding their release, which compels Mack to close the circus.
As Henrietta, Murphy, Thelma, and Frankie depart, Mack bids farewell to Ivan, expressing gratitude for their shared moments. Dr. Maya Wilson takes Ivan to a spacious gorilla sanctuary at Zoo Atlanta, where he joyfully reencounters fellow gorillas and finds himself near the elephant area where Ruby resides peacefully with her own kind. Ivan gently reassures Stella’s spirit that Ruby is now free.
As the credits roll, a montage of photos and footage documenting the real Ivan's journey is displayed, concluding with Ivan warmly greeted by Bob, who is now part of Julia and George’s family, as Mack joins them to visit the beloved animals.
