A village without sick or injured children,
Breaking through the thick blue fog surrounding the 'Blue Country'
An adventure that risks Parangi's existence

The village 'Onsemiro', which is the setting and theme of the novel itself, is nicknamed 'Blue Country'.
The main character, Parang, moves to this village when he is eight years old.
Blue Country is a 'utopia' built for the safety and happiness of children, so much so that it is called 'the best village for raising children.'
The person who designed this village was also Parang's father, and when Parang asks why their village is called the Blue Country, his father jokingly replies, "Because you're here, Parang."
Parents in the Blue Country are all loyal to their children, and unlike parents in other places, they do not drink or act violently towards their children.
The village is free of anything dangerous or harmful to children, and features walking paths leading into the forest and 76 playgrounds of various shapes and sizes.
One day, the biggest question of his life comes to Parang, who had always been so happy.
My best friend, Woo-ryeong, suddenly left the village.

Parang, who dreams of becoming a 'detective', a profession that does not exist in the Blue Country, decides to leave behind the adults who tell him nothing and go out to find Woo-ryeong.
Parang eavesdrops on a village committee meeting chaired by the principal.
An amazing story heard among the parents of a village that I had no idea about.
It was Woo-ryeong who was 'deleted'.
What does it mean to be "deleted"? Is this town truly a utopia for us?

“What is the most important thing here?”
My father answered my question as if it were obvious.
“He’s a person.
"It's you guys."
--- pp.10-11

The hideout was close to the border leading to the Snake Forest.
After walking along the forest for a while, a sign appeared saying that we could not go any further.
We called the forest across from the sign 'Snake Forest'.
The area became known as Snake Forest after rumors spread that someone walked past the sign and saw a snake.
--- p.21

“Think about the purpose of creating the Blue Country in the first place.
“Why did we build this place?”
Dad didn't answer.
The principal spoke again.
“We created this village to watch children grow up healthy.
We cannot tolerate any child without parents in our village.
That principle must continue to be upheld.”
--- p.34

“It’s funny how everyone pretends to be serious.
“Actually, our parents are ‘playing’.”
Someone suddenly stood up.
“That guy needs to be expelled!”
People started to murmur.
The space dad continued speaking without being discouraged at all.
His usual quiet demeanor was nowhere to be found.
“You all are having fun.
You're playing parent, feeding and nagging your children.
Isn't it?"
--- p.61

“You said you were curious about what happens when adults drink alcohol?”
When we almost reached Woojoo's house, Woojoo opened his mouth.
“Did you see my dad that day? He said something he never usually said.
The true words hidden in your heart.
And I feel sad too.
How do you know I'm sad? You're staring at me more intently than usual.
As if there was something hidden on my face.
That's when the adults get drunk."
"Sorry."
I meant it.
I regretted bringing up the painful parts of the universe.
The universe spoke.
“I accepted you because you saw a part of this world.
“That doesn’t mean I trust you.”
--- pp.77-78

The library had an encyclopedia about villages outside the blue country.
It breaks down information about various villages into geography, vegetation, climate, etc., but it's so boring that it seems like no one but the universe has read it all the way through.
Some villages are surrounded by the sea, while others have mountains that cover more than 70 percent of their area.
Population and sex ratio were also included.
But that wasn't enough.
There was no book that told us how to get to other villages.
I had no idea how the people there formed families and what they did to spend their days until I met them.
I filled in the missing parts with my imagination.
Children who live in a mountainous village will run up the mountains.
Children living near the ocean will be able to stay underwater for long periods of time without breathing.
--- pp.102-103

Mom sings a song.
Have you seen the blue country, full of dreams and love…?
My mom rubs my cheek.
I like the feel of it and don't want to let it fall off.
I don't want to leave because my mother's body feels like my own.
Mom says.
“I love you, baby.
love you."
I don't want to sleep, but I can't help but fall asleep when I hear my mother's voice.
My mother whispers in my ear as I fall asleep.
I love you as much as the Earth.
I love you as much as the sun.
I love you as much as the universe.
I love you more than everything else combined.

--- p.180