DC Comics Presents Annual #[nn]

In "Crisis on Three Earths," the Luthors of Earth-1 and Earth-2, frustrated by their repeated defeats at the hands of their respective Supermen, swap places in a desperate bid to outwit their rivals. When that fails, they flee to Earth-3, where they join forces with the tyrannical Ultra Man and a twisted version of Lois Lane-Luthor to launch a devastating plan targeting the very fabric of Earth-1 and Earth-2. With the two Supermen—Superman (Earth-1) and Superman (Earth-2)—now united, they must rally a new ally from Earth-3 to stand against a threat that could unravel reality itself.