Welcome to the most bizarre group of issues in Fantastic Four history. First, there’s this thinly veiled sex scene in which Johnny cheats on Alicia with Crystal.
Then, there’s a “teleportation warp” that takes the group through a series of very weird adventures that feature Morbius the living vampire.
I’ve read these comics but I can’t really tell you what happened in them.
I’m pretty sure Steve Englehart started smoking whatever it was Steve Gerber smoked.
Actually, according to Sean Howe’s wonderful history of Marvel comics, Gerber never did drugs. But Englehart and Starlin loved to drop acid together. Pretty sure that’s what led to these issues.