Walkthrough: At the end of Route 12 is Route 13, a small path that connects to both the Haina Desert and Tapu Village. As you arrive, Hau will appear to say hello. From out of nowhere, Gladion will appear too. He will ask the two of you if you know anything about a Pokemon named Cosmog, and though neither of you say so, Hau's behavior lends Gladion to believe you have. After have this feeling, he tells you and Hau to protect Cosmog at all cost.
Wild Pokemon:
Fishing (Levels 10-33): Magikarp(55%), Wishiwashi(40%), Bruxish(5%)
Fishing SOS Pokemon #1 (Levels 10-33): Gyarados, Wishiwashi, Bruxish
Fishing SOS Pokemon #2 (Levels 10-33): Magikarp, Wishiwashi, Bruxish
Fishing Bubble Spots (Levels 10-38): Magikarp(40%), Bruxish(35%), Wishiwashi(25%)
Bubble Spots SOS Pokemon #1 (Levels 10-38): Gyarados, Bruxish, Wishiwashi
Bubble Spots SOS Pokemon #2 (Levels 10-38): Magikarp, Bruxish, Wishiwashi
Items:
Max Potion - From Hau
Moon Stone - Near Water
Guard Spec - Near Cove By Water
TM12 - From Punk Girl In Trailer
Fresh Water - From Trial Guide
Adrenaline Orb - From Trial Guide
Fresh Water - From Hiker After Saving Him In Desert
Rare Candy - Near Preschooler & Rockruff
Vending Machines:
Fresh Water - Soda Pop - Lemonade