The curtain rises and the "classic" story of survival begins, in which the Simpson family is stranded on a desert island. After a nuclear power plant goes into self-destruct mode, only one person can save all of Springfield's residents… and he has just 25 hours to put things right. It's going to be the longest day of Homer Simpson's life! And when Mr. Burns travels to the spa to be rejuvenated, he comes back a new man—literally! Who is the con man and why is he selling all of Mr. Burns' possessions? And where is the "real" Mr. Burns? Is he alive and well, or did he "leave the stage through a side entrance"?