Joh-El, the firstborn son of Jor-El and Lara Lor-Van, and Kal-El's older brother, after sending his younger brother to a distant planet on the only escape ship the family had, found an ancient chant with instructions to open a portal to somewhere.

Unfortunately, due to some complications, this portal became unstable and sucked Joh-El and his dog Krypto, to an unknown place, a strange planet called Earth, but that planet was in the Marvel universe.

[A Superman and Marvel fanfic.]