In the third episode of "COBRA" Season 2, the political drama intensifies as Southeastern England faces a new crisis following the explosion of a sunken munitions ship. The closure of the port of Dover due to a cyber attack on the radiation scanning system adds a layer of urgency, raising the specter of a dirty bomb threat.

The episode begins with a tense situation as the government scrambles to locate and manually scan every vehicle that passed through Dover during the system outage. Prime Minister Robert Sutherland is faced with a dilemma: disclose the potential security breach and risk public panic, or maintain silence and weather the criticism of secrecy. He opts for the latter, a decision that will have far-reaching consequences.
Amidst the chaos, a truck from Ukraine is flagged for its lack of radiation scan, sparking a race against time as the military is mobilized to secure the area. The industrial park becomes a focal point of the investigation, with fears rising that the truck could be linked to the assassination of oligarch Kostenko and the ensuing chaos.
In a dramatic twist, the truck is found to be emitting radiation, but from an unexpected source: Chernobyl-grown blueberries, a last-minute shipping substitution. The discovery is both a relief and a public relations nightmare as the fruit is condemned to destruction, and images of the military response go viral.
As the government struggles to regain control of the narrative, opposition from the Labour Party led by Chris Edwards grows stronger. Edwards seizes on the exonerating Singer report, leaked by Sutherland's government, as a smokescreen for their alleged involvement with a Chinese company that may have triggered the ship's explosion through ocean drilling.
In a bid to shore up his government's credibility, Sutherland appoints his rival, Archie, as Foreign Secretary—a move that shocks his adviser Anna. The political maneuvering continues as Sutherland navigates the fallout from the Singer report, the blueberry truck incident, and a growing conspiracy theory about poisoned food.
Anna's frustration mounts as she learns of rumors from her son, and she is further disheartened by Sutherland's reluctance to address the public. The discovery of the final truck, with falsified paperwork and hidden under Waterloo train station in central London, escalates the crisis to a breaking point.
The truck, emitting a high level of radiation, is found to contain a chilling surprise: a human body hanging from the ceiling, the source of the radiation. The macabre discovery forces Sutherland to confront the possibility of war and the need for the country to be prepared for the worst.
As the episode concludes, Sutherland is left to grapple with the implications of the radiation source, the public's mounting fear, and the political implications of his decisions. The port closure, the blueberry truck, and now a corpse radiating in the heart of London—each event adds to the pressure on Sutherland's government, testing its resolve and transparency.
"COBRA" Season 2 Episode 3 delivers a gripping narrative that explores the delicate balance between national security and public trust. With its intricate plot and high-stakes drama, the episode keeps viewers on the edge of their seats, eager to see how the government will navigate the escalating crises and the political minefields that accompany them.