After the harrowing aftermath of 9/11, Jack Ryan (Chris Pine), a bright student at the London School of Economics, finds himself thrust into a military career as a Marine second lieutenant. In less than two years, he is deployed to Afghanistan, even though his analytical skills in pattern recognition could have secured him a safer desk position back home. A tragic accident occurs when his helicopter is shot down by a surface-to-air missile, leaving him with critical injuries, including a damaged back. In a courageous act, Ryan saves two fellow soldiers from the wreckage before being transported to a field hospital and then airlifted to Kandahar, where doctors give him a grim ultimatum—he has just 90 minutes to undergo life-changing surgery.
During his arduous recovery at Walter Reed Hospital, Ryan attracts the professional interest of Dr. Cathy Muller (Keira Knightley), a dedicated physician, and Thomas Harper (Kevin Costner), a seasoned CIA officer. Harper recognizes Ryan's unique talents and offers him a position within the CIA's financial intelligence unit, which monitors terrorist financing. The job demands Ryan to complete his PhD and operate undercover in various private banks to trace the funding sources for terrorism, all while keeping his true occupation a secret from those closest to him.
Fast forward a decade, Ryan now leads a double life as a compliance officer on Wall Street. His covert role allows him to investigate suspicious financial activities with implications for national security. As the U.S. government supports a pivotal Turkish oil pipeline proposal, Ryan spots anomalies in market reactions that defy expectations. Notably, the Russian Federation’s opposition stems from fears of economic ruin if the project succeeds, potentially signaling a drop in oil prices and jeopardizing their financial stability.
In the midst of his investigations, Ryan discovers that vast sums of money belonging to Russian entities have gone missing. The trail leads him to Viktor Cherevin (Kenneth Branagh), a powerful Russian tycoon with murky connections. As events unfold, Ryan’s relationship with Muller grows strained when she suspects his loyalty after finding a ticket stub in his trousers. Determined to uncover the truth, Ryan attempts to investigate Cherevin's accounts, but his inquiry brings violent consequences, including a near-fatal encounter with an assassin disguised as a bodyguard.
As the tension escalates, Ryan finds himself in a cat-and-mouse game with Cherevin, which further jeopardizes his relationship with Muller. When Ryan deploys his skills to understand Cherevin's shadowy schemes, he realizes that a massive financial collapse orchestrated by Cherevin hinges on a coordinated terrorist attack in the U.S. Time becomes of the essence as Ryan and the CIA work tirelessly to thwart this plan, with lives hanging in the balance.
In a climactic series of events, Ryan finds himself racing against time to prevent a catastrophic explosion in Wall Street, using his keen analytical skills to outsmart the threat. Ultimately, he is forced to make heart-wrenching decisions to ensure the safety of innocent lives, even as his personal life crumbles under the weight of secrecy and danger. In the end, Ryan's perseverance leads him to reunite with Muller, who chooses to stand by him despite the perils of his career, while Cherevin meets his fate at the hands of his own conspirators. The story culminates with Ryan and Harper summoned to the White House to brief the president, stepping into a new chapter of their lives—one filled with uncertainty yet bound by resilience.
