Clayborne and Holland find Prof, who suggests using sonics against the plant life. Outside London, while Ace fetches a pack of jet fuel, Rocky chants to allow one of M'Nagala's kin to enter this world. Back in Pennsylvania, Holland ducks away because he is reverting to Swamp Thing as his bio-restorative formula wears off, but Clayborne and Prof fight off the cultists and fire the emergency siren, transforming the cultists to slime. In London, Ace chucks the fuel pod into the monster, destroying it and shutting the portal. Soon after, all the Challengers are reunited in Perdition.; Clayburne flies to Oregon to ask Holland for help and he agrees to accompany him to Pennsylvania. Meanwhile, Rocky and Ace fly to England and perform an incantation from a mystical book and bring M'Nagala's "family" to Earth as Monroe tells June and Red how M'Nagala came from the stars.; In Challenger Mountain, Clayburne (the wanna-be Challenger), uses the computer to analyze Prof's infection. It recommends Dr. Alec Holland as an expert in "biochemical abnormalities."; The Challengers attempt to free June, but are beaten down by the cultists.