As Jefferson Blue and his wife, Jane, revel in the joys of parenthood, they find themselves caught in a web of conflicting desires. Their baby daughter, the light of their lives, brings both immense happiness and considerable stress—partly due to their disagreement over her name and partly because they straddle the line between wanting a normal family life and the exhilarating world of espionage. As they traverse the lively streets of New Orleans, they often thwart the antics of a pesky mugger known as Muerte, whose attempts to trouble them are consistently thwarted by the Blues' sharp wits and resourcefulness.
However, just when they believed they had moved past their spy days, an old comrade from the shadowy world, Frank, approaches them with an enticing offer. In exchange for additional maternity leave and a substantial bonus, the Blues agree to embark on one final mission: locating a former Czech Secret Police officer, Novacek, who has come into possession of a highly volatile experimental explosive known as C-22.
As Jeff and Jane delve deeper into this assignment, they find themselves entangled in a dangerous game of cat and mouse with Lieutenant Sawyer, a sharp-eyed detective suspicious of their presence in New Orleans. Despite their efforts to keep their true intentions under wraps, the couple can’t resist confiding in Sawyer and his partner, Sergeant Halsey, about their actual goals.
In a clever twist, Jane disguises herself as Muerte and cleverly contacts Novacek’s henchmen, all while maintaining the ruse with her husband and the authorities. Meanwhile, Jeff meticulously follows the trail, with Sawyer hot on their trail. As they approach Novacek's lair, the tension heightens, forcing the Blues into a critical choice that will not only test their love for one another but also their commitment to their daughter’s safety.
When Novacek’s goons capture Jane and their infant child, Jeff is compelled to take decisive action. He demands the safe return of his wife, only for Jane to challenge him to abandon the mission and save their child—a desperate move to shield their little one from imminent danger. Yet, the Blues refuse to retreat easily. They devise a daring escape plan to rescue Jane and dismantle Novacek's operation once and for all. With their daughter’s future at stake, Jeff and Jane embark on a perilous pursuit to track down Novacek and recover the C-22, hidden deep within a treacherous salt mine.
As Jane grapples with Novacek in a fierce confrontation, she finds herself at a disadvantage while her cunning adversary seems to gain the upper hand. Simultaneously, Jeff seizes the moment to flaunt his bravado, taunting Novacek with reckless abandon and wielding a flamethrower menacingly near the C-22's secure case, daring him to release Jane into his custody. Undaunted by the danger, Jane manages to break free, delivering a powerful kick that sends Novacek crashing down. Just as victory seems within grasp, a helicopter appears overhead, piloted by one of Novacek's former thugs, here to reclaim his disgraced leader. As Novacek is swiftly handcuffed and spirited away by Frank, the Blues can't help but revel in their hard-fought victory, feeling a wave of relief wash over them. Before they set sail for Cuba, they take a moment to deal with Muerte one last time—this time with a life preserver—bidding a dramatic farewell to New Orleans as they depart by boat.
