Nearing death, Superman accomplishes a variety of tasks that significantly help both humans and Kryptonians, and completes his last will and testament. Meanwhile, Luthor survives his execution as he took a serum similar to what Superman made for Lois and escapes. Superman then learns of Luthor's ally Solaris, who has tampered with the sun. Superman engages Solaris until a Sun-Eater that Superman had cared for in the Fortress and subsequently released returns to weaken it. After Solaris destroys the Sun-Eater, Superman defeats Solaris, leaving its body intact because he has learned from the Superman Squad that Solaris will become an ally in the future. Clark returns to the Daily Planet to submit his article but falls dead. As the staff tries to save him, Luthor arrives and attacks Metropolis.