^ I have approximate knowledge of many things!
Anyway
38a "Word War II"
38b "Another Way"
39a "Ghost Princess"
39b "Dungeon"
First one gives me the vibe of either it being a grand war between kingdoms due to something (Lich King persuasion / shenanigans to feast off destruction?) or a time travelling ep to see whats up with all the dormant nukes (or perhaps someone actually tries to use them
Second sounds serious (either someone hurt or perhaps Finn trying to find another way to be with PB)
Third: GHOST ZONE!
Fourth: Obviously Lemongrab is going to return "OOONNE MILLION YEEEAAARS DUNGEON!
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XBL GT: Demon Ninja X2
"There comes a time in every man's or woman's life where they have to make **** up to cover their ass." - Hazama