The crisis of infinite Springfields is an event when the evil Simpsons of Earth-9999999 began threatening the multiverse, forcing The ancient one to summon different versions of the characters throughout the multiverse.
In a shocking conclusion where the Earth-98 Lisa Simpson murdered the evil Bart Simpson, the damaged multiverse was rebooted into a the New Earth-1 which combines the multiple universes, so that they can slowly heal and spread out to recreate the Simpsons multiverse.
Characters brought by The ancient oneEdit
•Bart Simpson (Earth-3): The Bart Simpson of the reality similar to the 21st century.
•Lisa Simpson (Earth-98): The Lisa Simpson from the world where she killed Bart Simpson.
•Homer Simpson (Earth-1): The prime Homer Simpson