Pixar famously scatters easter eggs throughout its films that point to the movies that came before them and to the movies that are coming next. It seems like a way for the always-charming movie studio to have a little bit of fun with its fans — but what if those easter eggs were more than just casual connections? One theory suggests just that by compiling a single master narrative through all of Pixar's feature films, from the first Toy Story through Monsters University.

In the theory, published Thursday by blogger Jon Negroni, Pixar's films fall into roughly three groups within the same universe: first are films with intelligent animals, second are films with complex machines, and third are films in an apocalyptic future filled mainly with insects and mutant animals. The narrative spans a history from medieval times to the present day and well beyond, detailing a complex series of evolutions and inventions that make it all possible. It sounds like a stretch — but the further you delve into Negroni's theory, the more his initially hard-to-believe timeline starts to add up. You can read what Negroni's calling "The Pixar Theory" over at his website.