In this Endgame finale, all of Sesame Street Muppets worry about the inevitable, the time to grow up and face real-life. Nothing is as colorful as it used to be when they were younger and everyone seems to move on from the street they live on. Grim, a dangerous masked villain in armor sucks away the imagination and tells them the truth about the world and how horrible it is. They have a choice lead normal boring lives like everyone else or stay a child forever and no one will care. The street gang choose to fight back with everything they've learned up to this point since 1969 in the epic confrontation against Grim and his terrible glimpse of reality.
