Ghastly Bottom is the fourty-sixth episode of the spin-off, Absorbent Days, and the sixth episode of season four. In this special, Bikini Bottom has become infested by ghosts, goblins, and haunting creatures due to the newest menu item of the Krusty Krab: the Ghastly Patty. Unless all the sauce is removed from the town before midnight on Halloween, the fish will remain immortal apparations. Can SpongeBob and Patrick reverse the fate of their city, or will the town become spooky forever?