Fantastic Four, Vol. 1

Johnny has been searching for Doctor Doom, but hasn't found evidence of him anywhere. Evidence soon finds him, though. Doom has recruited Namor to help him defeat the FF, though Namor refused to harm Sue. Namor plants a magnetic grabber in the basement of their headquarters, which Doom uses to rip the building out by its foundation and carry it into space. Realizing that Doom has targeted him as well, Namor helps them fight through the vaccuum of space to the point where they can disable Doom's craft. Doom escapes by catching a ride on a passing asteroid, and his captives return home, at which point Namor buries Doom's technology deep within the sea.