After the events of Dev Action: The End, Dev finds that the world is much more different than it was before. He finds that some people that he knew have just vanished, and the voices of his friends didn't sound the same as before. TechTown looked different, Team Action Base looked different, everything was different. He slowly realizes that even though he saved the world, it came at a cost. Dev now has to get used to this new life style with the addition of now having robotic legs. However, Dev isn't the only one who remembers the past world.