Rustboro City has a few survivors and many of its buildings are blocked off or emptied. It's mostly an area for more story to happen. It connects to Route 115, Route 116. and Route 104.
Story[]
The Cut Man's House has been turned into the Pokémon Center and has a zombie pen. Apparently the Cut Man has been killed. His HMs and daughter have gone missing. A Demon Corpse NPC tells you that the zombies in the pen are food for them, even though it's connected to the survivor's hideout.
You have to talk to Alicia, who tells you that she's a Deathcaller, a servant of Lord Gravetric. She does not tell you who this is. She also tells you that she's the one who has been summoning the demons. After defeating her, she leaves to Verdanturf Ruins.
Continuing on, a cutscene plays where you watch a mysterious man talk to someone named Dantalion, who seems to be a demon controlling a corpse who is loyal to the man. The mysterious man has cloaked them in invisibility, although you can still see and hear them. The mysterious man says that he has located the source of the demon summoning and that he and Dantalion are going to stop them.
The player comments on how familiar they felt and wonders why they could see them when no one else could. They conclude that they should help them if they're going to stop the demons.
Heading to the Eastern exit, you trigger a cutscene where the mysterious man confronts you rather antagonistically. He says that you can't fool him, even "disguised as you are," but you tell him that you lost your memory. He reveals that his name is Gleis and claims that he must have mistaken you for someone else. He remarks that your "Second Sight" must be really strong if you can see him, and that he knows of only one other human with that power. You tell him that you want to help stop the demons from being summoned since an old lady told you to and because it might help find your brother. He tests your strength here.
After beating him, he's content with making you an ally and says to meet with him and his servant Dantalion at the cave eastward.