Speak with Auntie Martha in Evermore to learn that a baby higgledy has ran away and she wants you to track it down. You have to go to some place called Crosswater Cavern, which is somewhere you’ve never been before. You will need the Bridge spell for this, but you have it already since it’s needed for story progression. Teleport to Rolling Hills and look at your map. See the piece of land sticking out a tiny bit straight north from Auntie Martha’s Cottage? You’ll need to approach from the north and if you’re in the right spot, you should see a cave entrance in the cliffside.

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The location of Crosswater Cavern

Head inside to find the runaway higgledy, only for it to run deeper into the cave. Continue south to some enemies, then go west at the first split to find a chest at the end (Soreaway Sweet). Back at the split, keep going south to another, opting for the southwestern path this time. More enemies will be here, as well as a higgledy stone. It will want a Snow-White Thread, so hand it over to make Motley the Menace join you. That isn’t the correct higgledy, so double back and take the southeastern path to another room, where a Porc Chopper is harassing your runaway. Defeat it and the higgledy will turn into a normal one, joining you on your adventure (Humdrum the Heroic).