A day full of adventures, experienced by three children.
Dávid - a man living alone - one day receives an email. The email is about an unknown but also special software that is offered only for him, for free. Dávid's friend Oszkár tells him that the software is capable of rewriting reality, but also warns him to ignore the email, because it can be dangerous. Dávid doesn't listen to Oszkár, and downloads the software.
Leon, a member of a space research center, notices that the central camera is malfunctioning. He sets out to find out what the problem might be. Soon he meets a woman named Kata, who explains that an alien named Killer is responsible for it, who is seeking to destroy the world.
