The drama is a remake of director Yeon Sang-ho's debut film of the same name, and is the first horror animated film invited to be screened at Cannes. This is a Korean drama about school violence, which mainly tells the story of how those who conform to violence and power are called "pigs" in the small society of middle school, and how they resist in despair with inferiority complex and inferior consciousness. The animated film has attracted much attention at major award ceremonies.