game\Overworld Screens\!Kim\Special Events.rpy
Line 2357 should be "$ pmrksa_content2["Available"] = True"
open in text file, edit this line, save and relaunch.
so is it a typo on your end that the "3" is turning into a "2" and the end of "..._content"?yeah, i know, im just reporting. if i can read it i can edit it.
and no, the correct module name is
$ pmrksad_content2["Available"] = True
there is a "d" after "pmrksa" making it "pmrksad" which is the name of the module that is being called uppon
OP said "pmrksa_content3"