The Fantastic Four are testing their rocket when they are drawn into the Skrull Galaxy. After beating the first round of Skrulls, the Fantastic Four weaken and are taken prisoner. The cruel Skrull Warlord Morrat wishes to overthrow the Skrull Emperor. The Warlord gives the Fantastic Four the option to assist them or die. Reed tricks the Warlord into getting him and his friends' powers fully charged. They defeat the Warlord as the Emperor arrives and he allows the Fantastic Four to go freely back to Earth.

Lady Dorma of the undersea civilization of Pacifica asks the Fantastic Four to aid her lover Prince Triton, whom she betrayed to usurper Attuma in a fit of pique.