Universes are fragile. They are old, and one knock can send them on a destructive course that nothing can stop. Once this happens, the entire Omniverse is threatened. Reality rips itself apart like an angry child with a napkin. Civilisations fall. Oceans boil. Blood rains from the skies. Hope surrenders. Bravery retreats, and all is lost.

When universes MLP-4 and RL-0 collide and combine, what can stop them from absorbing the whole Omniverse into a hellish, cosmic nightmare of the gods?