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.

Ji-woo, an outcast at a prestigious private school, meets Hak-sung, the school janitor who is actually a mathematical genius who defected from North Korea.

Min-ha and Sang-beom are a gay couple in high school. They go on a journey to the shore for their 100th day anniversary. Min-ha does not care what other people…