A skilled fisherman and whale hunter named Captain Nolan becomes obsessed with capturing a great white whale. After a failed attempt to catch a large orca, he unintentionally kills a pregnant female whale. This act of violence triggers a series of vengeful attacks from the male orca, who witnesses the brutal incident and sets its sights on Nolan. Driven by a mix of guilt and determination to protect his crew, Nolan finds himself locked in a deadly feud with the intelligent and relentless orca. As Nolan's actions escalate, the fishing community becomes increasingly aware of the danger posed by the whale, causing tension and fear among the townspeople.

The orca's attacks grow more strategic and devastating, targeting those close to Nolan and anyone standing in its path. Amidst the escalating conflict, marine biologist Rachel Bedford tries to reason with Nolan, explaining the intelligence and emotional depth of orcas. Despite her warnings, Nolan is determined to confront the whale on his terms. The film builds towards an inevitable showdown, with both Nolan and the orca driven by their mutual desire for retribution. As events unfold, questions about revenge, nature, and humanity's impact on the animal world come to the forefront.