Hundreds of cash-strapped players accept a strange invitation to compete in children's games. Inside, a tempting prize awaits with deadly high stakes. A survival game that has a whopping 45.6 billion-won prize at stake.

In a world where criminals evade justice, citizens vote via text for the death penalty, executed by "Dog Mask" if over 50% agree.

A teenager at Rushmore Academy falls for a much older teacher and befriends a middle-aged industrialist. Later, he finds out that his love interest and his friend are having an affair, which prompts him to begin a vendetta.