Fred and Ellie are twins. But not identical (because thats impossible for a boy and a girl). They do like all the same things, though. Especially video games. Which they are very good at. They arent that good, however, at much else like, for example, football, or dealing with the school bullies.Then, they meet the Mystery Man, who sends them a video game controller, which doesnt look like any other controller theyve ever seen.