Visit JeongHwa (Saintmorning Npc), she is is crying, because she has lost her child.

She thinks Porgo has some information.
Go visit Porgo (Saintmorning Npc)

Porgo talks of other children who have recently been stolen.
At the time, most of the girls in SM disappeared!
Porgo formed a Citizens investigation Team.

But they failed to find any clues
Because he found it all very suspicious, Porgo is still searching.

A Few years ago, a lot of girls under the age of 6 years disappeared from SaintCity.

He gathered evidence but it wasn't enough to prove anything to The Office.
He came up with a plan when he saw the Mia's

QUEST: Visit JeongHwa, recieve quest. Then Visit Porgo
REWARD: Gain EXP

Porgo asks you to gather 20 Small Mias and come back to tell him all you find out.

QUEST: Hunt 20 Small Mias
REWARD: 43200 Penya, and EXP

Part Three : Facts of Mia

Porgo is angry at the Mayor, as the Mayor thinks the Evidence you gathered isn't enough (boooooo)
Porgo thinks of another plan though

He wants you to go see the Mayor yourself.
She gives you the Book of Secret to take back to Porgo, and tells you she doesn't want to hear of it again!

QUEST: Meet the Mayor of SaintCity.
REWARD: EXP, Gain the Disappearance book of Secret

Part Four : Doll of Mia

Visit Porgo again.
Checking through the book, Porgo discovers that the Mias are the Missing girls!
Porgo tries to figure out what to do; to convince JeongHwa that her daughter is a Mia.

Her daughter had a favorite Doll, maybe if we find the Doll, JeongHwa will be convinced she became a Mia.

QUEST: Hunt any type of Mia, for a  Jinyoung Doll . Visit JeongHwa again
REWARD: EXP

Part Five : Uncovered Past

Return to Porgo.
He speaks of the report again, saying its odd that some of the pages in the book don't seem to be the originals.

He tells  you to find a special book near the Saint Hall, which may have the real pages 

QUEST: Find the "Truly disappearance Book", and return to Porgo
REWARD: EXP

Part Six : Special Kids

Porgo is pleased to see you.
He has found new evidence about the kids.
Its something to do with the Mias and Captain Mias, and he wants you to hunt some of each for him, and, at same time, find reports.
He believes he can prove there is something between them.

QUEST: Hunt 7 Mia, 5 Captain Mia, and collect 22 Reports about Mia
REWARD: EXP

Part Seven : Secret Trade

Porgo continues; saying it was all to do with Supernatural Power.
The kids were afraid of the Former Mayor, and their parents.
The parents and Mayor decided to kick the Kids out of the City.
And therefore, they became abandoned.
Porgo gives you the new evidence called  "Proof of Missing Case" to give to the Mayor of SaintCity.

QUEST: Take the New Evidence to the Mayor of SaintCity.
REWARD: Gore Necklace +2

Part Eight : Mia, the Cursed Name

The Mayor forms an Inquiry Group to investigate the new evidence.
The Mayor asks you to tell Porgo they are checking into the case again.
Porgo is grateful, and Sad that the kids are still abandoned.

QUEST: Visit Porgo to give him the news.
REWARD: Gain 32000 Penya