At his high school graduation ceremony in Detroit, Michigan, Michael Corben learns that because he failed to complete his foreign language requirement, he will not officially graduate. The only way to make up the credit is to go to France with the stern Mrs. Grober and her French class. Meanwhile, at a remote French chateau, the unscrupulous Augustus Steranko threatens a French diplomat who refuses to part with the country’s gold reserves. British special agent, “Blade,” attempts a rescue operation, but Steranko’s petite advisor, Ilsa Grunt, kills him with her gold whip. A few days later, intelligence agents in London, England, discuss the recent deaths of several European finance ministers. With Blade no longer in the field, they worry about financial chairman Augustus Steranko, whom they unwittingly presume will be the killer’s next target. Lieutenant Colonel Larabee announces the impending arrival of an American agent code-named, “Michael Corben,” who will protect Steranko. After the meeting, one of the agents telephones Ilsa Grunt with details of the plan. The next day, teenager Michael Corben meets his French class at the Detroit International Airport. As he and his friend, Kent, enthuse about sneaking out of their rooms at night, Mrs. Grober informs him that if he wants a passing grade, he will adhere to her rules. Elsewhere in the airport, the American secret agent takes a phone call for “Michael Corben” and is killed by Ilsa Grunt. Back at the ticket counter, young Michael is surprised when the ticket agent assigns him a seat in first class. En route to Paris, he luxuriates in first-class, while Mrs. Grober complains to the stewardess, a disguised Ilsa Grunt. On landing, a British agent whisks Michael away in a car. Ilsa sends her robot henchman, “Zigesfeld,” in pursuit, eyeing Mrs. Grober with suspicion. Michael is taken to an underground laboratory, where research scientist Vendetta Galante shows him the gadgets and accessories designed to help him in his mission. He protests that he is not who she thinks he is, until she reveals a red sports car. Michael learns that his assignment is to protect Augustus Steranko, who is hosting a summit at a French chateau, where foreign emissaries can safely deposit their gold reserves. Michael drives away, but is soon overtaken by a young woman in a white sports car, who yells at him to pull over. Searching for the controls to roll down the window, Michael inadvertently deploys a parachute, thwarting Zigesfeld, who is also in pursuit. On the outskirts of Paris, Michael and the young woman careen around a bus transporting Mrs. Grober and the French class. Michael triggers one control after another, eventually stalling the car. Meanwhile, at the chateau, Ilsa Grunt informs Steranko that the German finance minister suspects foul play. The angry German barges into the gold smelting room, and Steranko boasts of his plan to remint the gold in the form of coins bearing his own image. He orders guards to take the finance minister away. That night, Michael goes to a casino, where he finds Steranko playing baccarat with the young woman who chased him in her car. Michael learns that her name is Mariska. Attempting to impress her, he uses his x-ray glasses to win a large amount of money from Steranko, who is immediately suspicious, and later sends his associate, Areola Canasta, to seduce the teenager. At the Palace Hotel, Areola invites Michael to lie on the bed, before releasing a scorpion, which he unwittingly brushes away. The creature falls down her negligee, causing her to moan and scream. Zigesfeld, lurking in the hallway, fires an explosive into the room, and Michael flees to his car. There, he finds Mariska already in the driver’s seat. She takes him to her apartment and demands to know his mission. When he says he is supposed to protect Steranko, she insists British intelligence have made a mistake, and that Steranko is actually the assassin. Mariska reveals that she is Agent Blade’s daughter, and Michael agrees to help her. They drive to the chateau, where they hide in the bushes and strategize how to get past the guards. Through binoculars, Michael notices a bus carrying Mrs. Grober and his classmates pass through the gate. Distraught, he confesses to Mariska that he is an American high school student, not a special agent. Just then, guards capture the pair, throwing them into a dungeon. Meanwhile, Steranko interrogates Mrs. Grober, threatening to drop her and the students into the smelting cauldron if she does not respond. That evening, Steranko and Ilsa Grunt host a lavish dinner for visiting finance ministers. Michael is escorted to a private meeting with Steranko. He mocks the financier’s plan for world domination, causing Steranko to reveal his intention of poisoning all the guests and blaming the incident on Michael and his “terrorist” friends. He banishes Michael to the dungeon, but the teenager escapes using explosive chewing gum. He locates Mrs. Grober and his classmates in the smelting room, and rescues them. He commands his teacher to stop the dinner guests from drinking the poisoned champagne, before turning to fend off Zigesfeld. Michael then rushes to the dining hall to confront Steranko, but Ilsa Grunt wields her gold whip, and the villain escapes with Mariska as his hostage. On the roof, Steranko loads a helicopter with gold before attempting to fly away. However, the aircraft is too heavy to take off and, under a shower of gunfire, crashes into the chateau. Although Steranko and Ilsa Grunt perish, Mariska falls safely to the roof. Trapped by flames, Michael sweeps the girl into his arms and uses his aeronautically designed “suction sneakers” to walk down the side of the building. On the lawn, Mrs. Grober and the French class rejoice as Michael and Mariska emerge unharmed. The teacher awards Michael his French credit, while Michael, with his arm around Mariska, says he deserves a vacation.