A possible summary is:
A group of boys visit their friend Jun-ha's house and watch some videos while his mother is away. They are surprised by the appearance of Jun-ha's sister, who is pregnant and wearing a short skirt. They are also attacked by Jun-ha's brother, who is wearing a hair band and a suit. The boys call their mothers to resolve the conflict, but the mothers end up fighting each other. Jun-ha's father arrives from Saudi Arabia and Myung-su's father arrives from the mountains, both wearing strange outfits. The boys decide to leave the house and play outside.
Here are the key facts extracted from the text:
1. The text is a transcript of a video that shows a group of kids visiting Jun-ha's house and watching TV.
2. Jun-ha's house is big and has a video player, a radio, and a stage.
3. Jun-ha's family consists of his mother, his sister, and his big brother, who all look identical to him.
4. Jun-ha's mother is very strong and aggressive, and his big brother is violent and wears a hair band.
5. Myung-su is one of Jun-ha's friends who gets hit by Jun-ha's big brother and has snot in his nose.
6. Myung-su's mother is the boss of the seafood market in Gun-san and wears brand clothing.
7. Myung-su's father is being chased by someone and has a bag with something he can't tell.
8. The kids watch a movie with Sophie Marceau and are fascinated by her beauty.
9. The kids also watch an erotic advertisement and are excited by it.
10. The kids move the closet to block the door so that Jun-ha's mother can't come in.