"The Power of the Sphinx"
Nova figures out that the ship they destroyed was not operated by Skrulls but by the FF and they save the FF. The FF bring Nova up to speed on their situation but things go wrong when one of Nova's crew members, The Sphinx, transports himself down inside the Living Computer of Xandar to make himself a God. Johnny joins the battle as he arrives on Xandar just in time to join the fight against the Sphinx, but the Sphinx is too powerful for anyone. He heads off to destroy Earth and now the FF must find the only being powerful enough to battle the Sphinx to save Earth, they must find Galactus.