Tony (Connor Esterson) and Patty (Everly Carganilla) were quite good at playing online games, and they spend most of their time doing that, which is why their parents, Terrence Tango (Zachary Levi) and Nora Torrez (Gina Rodriguez), had some strict rules in place. Terrence has these rules as Terence and Nora are spies and their computers host the top-secret Armageddon code, and they are afraid that someone might use their kids' computers to hack into their network and steal the Armageddon code. Both spies are told by their boss Devlin that unknown assailants are trying to break into OSS servers to get to the Armageddon code.Tony and Patty were allowed to play games at a specified time during the day and for not more than a couple of hours. But that didn't stop Tony from sneaking out in the middle of the night and playing games with his sister. Patty didn't like it when they broke the rules, as she was the kind of person who believed that staying honest in one's life was of utmost importance. Tony didn't believe that, as he always said that one should have their way by hook or by crook. Patty tried to make him understand that maybe he benefited from speaking lies, but ultimately, he would have to pay the price for it. Tony took part in a competition organized by a gaming company that had created a game called Hyscore.As a prize for winning the competition, Tony got the game Hyscore, which hadn't been released up until then, installed on his computer. Tony had won the competition by cheating, but he was happy because he had gotten the desired result. In the night, both the kids came out and decided that they would check out how the game was. Tony's father used to change the password so that his kids weren't able to access any games after the prescribed hours. But Tony had found the password, and he used it to log in to the game. But as soon as the game started, the screen started flickering, and the device shut down. The kids didn't understand what was happening, so they immediately ran to their bedroom before their parents came and caught them red-handed.The creator of the game, Rey "The King" Kingston (Billy Magnussen), had deceived Tony, and he had entered the system to steal the Armageddon code. That code was used by OSS agents to enter any device, and Rey knew that if he was able to get his hands on it, he would be able to rule the whole world and make people act according to his wishes. Meanwhile, Terrence and Nora were having an argument about whether they should delete the Armageddon code, as they knew that if it fell into the wrong hands, it would not be good for the world. Terrence was against it as he argued that they have used the code themselves to hack strongly protected systems, but Nora made him unconscious and went to delete it.But before she could do that, Rey hacked the system and stole the Armageddon code. Soon, there was widespread chaos all over, and the game Hyscore, got installed on the devices of half of the world. Terrence came back to his senses, but the character of the game, Hyscore, waged an all-out attack at their residence. Terrence and Nora were able to send their kids to the safe house, but they couldn't escape and were taken into custody by Rey King Kingston. Nora gives Patty her locket before she got separated from them.Terrence had divided the Armageddon code into two halves, and that is why Rey was only able to hack into half of the devices in the world. He had realized that the second half of the code was in the locket that Patty wore, so he sent his men to kidnap the kids and bring them to his hideout. In the meantime, Patty and Tony had figured out all the gadgets in the hideout and had trained themselves to be effective spies. The hideout is found by OSS agents who bring the kids to Devlin. The kids unlock Devlin's systems and tell him that Ray Kingston is their suspect. Ray's goons attack the OSS HQ where Devlin had brought the kids. They steal the Armageddon code from the kids and escape via boats on the lake. The kids follow them using OSS gadgets. They find the location of their parents by reverse tracker Nora's tracker and fly there is a jet.Terrence, meanwhile, told Nora that the Armageddon code had been created by him, but Tony, the little boy, didn't even know about it. Terrence said that during the fireball mission, in which they killed Vargos and destroyed his laboratory, he had procured a blueprint for a weapon that Vargos had been making. Terrence knew that if he was able to understand that blueprint, he could use it to make a code through which they could break into any kind of device. But Terrence was never able to understand it fully, but one fine day, Tony entered his room, and thinking that it was a puzzle, he solved it.It is revealed that Rey Kingston was Vargos' son, and he believed that his father was trying to make the world a better place through his creations when the OSS team arrived and killed him in cold blood. Even Patty believed that Terrence and Nora could have found a way where they wouldn't have to kill everyone. She actually told her parents what they could have done in order to bring the situation under control without hurting anyone, and Terrence and Nora were a bit taken aback as it made sense, and surprisingly, it had never occurred to them.After the death of his father, Rey believed that the people of the world didn't deserve to be treated nicely. He wanted to bring about a change by hacking into their devices and making them act according to his wishes. What Terrence and Nora had believed to be their victory was actually their biggest failure, and their own daughter made them realize that. Terrence, Nora, and even Tony understood that what Patty was saying made sense and that for being a spy, they didn't necessarily have to be dishonest in their approach.Tony and Patty reached Rey Kingston's hideout, where they met their parents and took them out of the holding cell. But Rey was already a step ahead of them, and before they could do anything, he used the Armageddon code chip and initiated the process of hacking into the devices of the entire population of planet Earth.A countdown started, and Tony knew he had to do something about it before it was too late. He found the place where the main system was kept, and he did everything that he could to stop the countdown. But he realized that he was deceived by the King, as he had unknowingly armed the system. That's when the King arrived and told them they had been duped, and now he was going to wreak havoc on the world. Rey Kingston left the scene with a VR pod, and that's when Patty realized that if they could enter the game and stop Rey, then they could save the world. They knew that Rey was controlling everything from inside the game, and all they needed was to find a way to defeat him. Terrence and Nora, in the direction of their kids, sat on the VR pods, and all four of them entered the virtual world of Hyscore. From Heck Knight to the King, the family faced every lethal villain who was a part of the game verse. Patty had requested everyone to play with all fairness, even if others resorted to dishonest means.It seemed like the King would defeat Tony, but Tony's honesty paid off, and he received an extra life, which was a sort of fair play award that was rarely given to the players. Tony defeated Rey, and Patty asked the OSS not to arrest him but to send him back into the virtual world so that he could become a better man. The generosity and honesty of the kids moved Rey, and he realized that to change the world, he didn't have to resort to such cruel means and methods. The kids were called by Devlin (D. J. Cotrona) to the OSS office the next day, and he told them they were also being officially recruited as spies. Devlin promised that he would bring about a change in the spy manual and not tell his agents to resort to unfair means. It all ended well for the Spy family, and probably, in the next installment, we will see them taking up more missions and saving the world from crises.