One day while going through some books with her friends, Rainbow dash shows Twilight a certain shape, and everyone suddenly starts hating on the hexagon. Of course, CGP Grey senses it all the way from earth in his universe, and ain't having none of it, as he teleports to Equestria just so he can explain how the hexagon, is the bestagon, using facts, logic, some stern words, and a little thing called SCIENCE!