The Fantastic Four are throwing a Halloween party and have invited all their superhero friends. Suddenly, Reed is alerted by his “hi-tech, fancy-pants security computers” to “an imposter” “amongst [their] colourfully costumed attendees”.
Fearful that Doctor Doom is lurking amongst them, the Fantastic Four split up to “canvass the crowd”. So far, Johnny, Sue and Reed have not come across any suspicious characters.
Ben meets the X-Men. Marvel Girl, Cyclops and Colossus are dressed as Dorothy, the Scarecrow and the Tin Man respectively. But Ben is unable to identify who is in the Cowardly Lion costume. He looks around and finds the rest of the X-Men, Angel, Iceman, Beast and Nightcrawler dressed as “the Presidents from Mount Rushmore”.
A suspicious Ben forces the Cowardly Lion to reveal himself. He turns out to be Wolverine, who did not really want to be at the party “but the X-Men needed a Cowardly Lion and [he] owed Jean a favour”.
In trying to calm Wolverine down, Ben let slip that they were on the lookout for an intruder. Wolverine catches a strange scent and tracks down the intruder. The intruder is M.O.D.O.K. dressed as a jack o’lantern. M.O.D.O.K. is promptly dismissed from the party.