Journalist Sang-jin uncovers the existence of the so-called ‘Troll Factory’ while investigating an online public sentiment manipulation story, and is confronted with an unbelievable truth.

After their father’s death, three brothers and one sister got together to find out how much money they would inherit from their father’s two billion won estate.

After Seon-yoo’s father committed suicide leaving behind a large sum of debt for them, Mother and 12-year-old Seon-yoo move to a new place to have new start.

Na-mi and Sun-woo, the outcasts in school, plan to commit suicide instead of going to the school trip. On the moment of success, they find out that the girl, Chae-lin,…