After landing in the GROOVY DOOM dimension (otherwise known as 00-D) the field team of RAY STANTZ, PETER VENKMAN, ERIN GILBERT, SAM HAZER and two different KYLIE GRIFFINS are attacked by the HEADLESS HORSEMAN.
Using hit-and-run tactics, the Horseman grabs Venkman by the hair and flees into the dark and stormy forest the GHOSTBUSTERS materialized in.
Venkman's roots hold, though because he uses a hair gel devised by EGON SPENGLER, granting an almost ironlike resiliency (which is required to maintain perfectly coiffed hair in the face of being regularly slimed.)
It's unknown what the Horseman intends for Venkman -- but his fellow Busters are giving chase!