The film Tucker's Experience begins on the stunning Gold Coast, where Canadian tourist Greg and his pregnant friend Heather are set to experience an exhilarating shark diving adventure. They are greeted by the boat captain, Tucker, who seems eager to lead them. Despite Heather feeling a bit uneasy when Tucker inquires if they are alone, they decide to continue with the dive.
As they journey across the sparkling waters, Tucker shares a chilling tale of his past—a shark attack that left him with deep scars on his torso. This ominous backstory heightens the tension as they eventually arrive at the designated spot where the thrill of diving awaits. Inside the cage, Heather, although initially nervous, finds beauty in the sight of sharks gliding gracefully outside. However, the experience takes a horrific turn when Tucker unexpectedly stabs Greg multiple times in the throat and pushes him into the water, leaving Heather in shock.
Simultaneously, an American surfer named Zephyr finds herself solo in the vicinity. She crosses paths with real estate agent Moses, who forces her into jumpstarting his car under the threat of revealing her illicit disposal of trash. Following some banter about their mutual love for surfing, they share a brief romantic encounter. However, when Moses wakes up to make breakfast, Zephyr has already left for the ocean. In a rush to retrieve her fin key left at Moses's place, she approaches Tucker for assistance, only to be abducted as he places a bag over her head.
Moses, harboring concerns for Zephyr, searches for her after discovering her van being towed. His worries escalate as he realizes something may have gone terribly wrong. Meanwhile, Zephyr awakens to find herself chained to a bed alongside Heather. In their desperate attempts to escape, Zephyr discovers Heather has an underwire from her bikini top, which they plan to use to free themselves. However, their hopes are dashed when Tucker discovers the hidden weapon, thwarting their escape.
That evening, after Tucker drugs the women, Zephyr finds herself tied to a chair while Heather hangs precariously above the water, strapped into a harness. As Tucker lures sharks with bait, he lowers Heather into the water, and despite Zephyr's desperate cries, she becomes another victim. Tucker collects a lock of her hair, adding it to a twisted trophy collection of his previous victims.
In a surprising turn, Zephyr manages to escape her restraints, using a waste bucket handle to stab Tucker. Although she seizes the keys to her freedom, a tranquilizer dart brings her down as she tries to reach out for help. The following day, Tucker returns to the mainland for new gear, while Moses, having assembled search efforts for Zephyr, uncovers troubling footage of Tucker’s truck near her van.
Moses bravely approaches Tucker's Experience, attempting to rescue Zephyr. However, Tucker returns just in time to confront Moses, immobilizing him with assistance from his accomplice, Dave. An intense confrontation ensues, and during the chaos, Tucker brutally kills Dave. Moses finds himself imprisoned with Zephyr, and in a moment of vulnerability, he confesses his care for her, believing she deserves better.
As Tucker displays his cruelty by setting Moses up as shark bait, Zephyr desperately instructs him to remain still, which initially saves him from a gruesome fate. However, as Tucker’s malevolence escalates, he tries to ensure a gory spectacle by stabbing Moses in the abdomen to entice the sharks once more. Seizing the opportune moment, Zephyr hatches a plan to escape by biting off her thumb to slip out of her handcuffs.
With determination, she engages in a fierce struggle against Tucker, ultimately managing to stab him with a harpoon gun that propels him into the jaws of a waiting great white shark, providing a final act of revenge. In the aftermath, Zephyr spots a party boat and signals for help. She rushes to rescue the unconscious Moses, pouring her heart out as she urges him to wake, conveying that he is her reason for surviving. When Moses regains consciousness, their bond is rekindled, leaving them hopeful as they await their return to shore, embodying the spirit of resilience in the face of terrifying adversity.