Most likely Dr Doom will be cruising space in his BMV spaceship when he sees an egg in the vastness of stars. When he brings it onto his ship it hatches, and the fully grown Silver Surfer - silver genitals and all - emerges. At which point he calls Dr Doom "Galactus", which is the native word for "father" in his long lost language.
Doom then tells the Surfer to travel to earth and interupt the wedding of his hated rival Mr Fantastic, and his lovely bride Invisible Girl (who Doom secretely lusts for). But it's not them he seeks: instead, Doom instructs the Surfer to lead The Human Torch to space. Once the trap is set the Surfer grabs the Torch and drops him into Doom's space lab.
Here Doom realizes his suspicions are true - the Torch is indeed the Invisible Girl's twin brother! With this information Doom uses stem cells and DNA from Johnny to create a female clone of himself, but with female gomeds - thus creating a newer, more powerful version of the Invisible Girl. With his new bride, Doom travels towards earth intent on enacting his revenge.
Twice the honeymoons, twice the action!