Walkthrough: After defeating Dexio/Sina, you will gain access to Route 4. This is forested path that contains many Wild Pokemon and Trainers looking to Battle, and it leads you straight to Paniola Town.
Wild Pokemon:
Grasses - Daytime (Levels 11-14): Lillipup(30%), Mudbray(20%), Pikipek(15%), Igglybuff(10%), Yungoos(10%), Grubbin(10%), Eevee(5%)
SOS Pokemon #1 - Daytime (Levels 11-14): Lillipup, Mudbray, Pikipek, Jigglypuff, Yungoos, Grubbin, Espeon
SOS Pokemon #2 - Daytime (Levels 11-14): Lillipup, Mudbray, Pikipek, Jigglypuff, Yungoos, Grubbin, Eevee
SOS Pokemon #3 - Daytime (Levels 11-14): Lillipup, Mudbray, Pikipek, Happiny, Yungoos, Grubbin, Eevee
SOS Pokemon #4 - Daytime (Levels 11-14): Lillipup, Mudbray, Pikipek, Igglybuff, Yungoos, Grubbin, Eevee
Grasses - Nighttime (Levels 11-14): Lillipup(30%), Pikipek(25%), Mudbray(20%), Rattata(10%), Grubbin, Eevee
SOS Pokemon #1 - Nighttime (Levels 11-14): Lillipup, Pikipek, Mudbray, Rattata, Grubbin, Umbreon
SOS Pokemon #2 - Nighttime (Levels 11-14): Lillipup, Pikipek, Mudbray, Rattata, Grubbin, Eevee
Berry Trees (Levels 11-14): Crabrawler(100%)
Zygarde Cells There is just one Zygarde Cell foud here.
Trainers
Bellhop Jody - Level 14 Drifloon
Collector Bryan - Level 13 Munchlax, Level 14 Bagon
Sightseer Scotty - Level 14 Rattata
Cook Ernie - Level 14 Cutiefly
Items:
Great Ball - Near Bellhop Jody
Tiny Mushroom - In Rock On First Path (Hidden)
Revive - Near Collector Bryan
Adrenaline Orb - Near Sightseer Scotty
Energy Root - Near Cook Ernie
Aguav Berry - Berry Tree
Pecha Berry - Berry Tree
Iapapa Berry - Berry Tree
Lum Berry - Berry Tree
Mago Berry - Berry Tree
Figy Berry - Berry Tree
Wiki Berry - Berry Tree