It is called the heart of Almia. There is a harbor which allows the player to cross the sea to places such as Boyleland or Haruba Village and dive in the sea in such places as Puel Sea and Sea of Wailord. On arrival, the player has to undertake a mission to destroy Gigaremo units placed by Team Dim Sun that hypnotize Pokémon. There, a member of Team Dim Sun will challenge the player with four Rattata known by a grunt as 'Team Rattata' and then a boss Toxicroak that must be captured.
Altru Inc., for much of the game's storyline, has a plan to redevelop Pueltown that most of the town's residents (save for one woman and the Altru employees) despise greatly, with one resident musing that they may rename Pueltown "Altrutown." Following the events at Altru Tower during Operation Brighton, the company drops the redevelopment plan.
Pueltown is later the site of the special mission "For The Bride And Shaymin!"
Pueltown has a population of 49, the most out of any city in Almia.
These are the quests which can be found in Pueltown:
The Boy Who Cried Lumineon
Pueltown Fishing Kid
I caught a Lumineon, but no one believes me. Can someone take a boat out to Puel Sea and prove that Lumineon live there? If you capture one, its data will be recorded, so that will do as proof!
Nosepass! Must Have Nosepass!
What is it, you ask? The answer is Nosepass! It's Nosepass above all! Nothing else will do! Deprive me of my food, but not Nosepass! I can't tell you why now, but, please, bring me a Nosepass!
Eevee for Marital Bliss
Pueltown Old Man
Our Eevee has gone missing. Can someone fetch it for us? I'm not sure if this is a useful hint or not, but our Eevee likes the sea breeze.
Dim... Sun... Come Back...
Pueltown Young Lady
My two, squat, dark, and handsome darlings have left me for life on the streets! They're running wild and cavorting in Pueltown, so please, reel them in back to Mama! Oh, my darlings Dim and Sun are Murkrow!
Our family Chingling spent all its time alone. Eventually, she even forgot how to cry. I would like her to meet a friend. I've heard there is a Chingling living deep in Crysta Cave, which leads to Hia Valley.
Drifblim's Moving Service
Pueltown Old Man
All the times I've moved, I've always had some Drifblim do all the heavy lifting. But this time, I forgot about asking them! Please, could you return with some Drifblim? Three would be dandy!
My Precious Fishing Rod
I took a boat out and went fishing in the Sea of Wailord. I hooked something big. The fact is, it was so big, it took off with my fishing rod and all! That rod's precious to me. Find it, please!
Unidentified Fleeing Omastar
What I'm asking you to do is take a boat out to the Sea of Wailord, take a dive, and check that there really is an Omastar down there. When you capture it, you'll get its data. That'll do nicely as evidence!