Na-miandSun-woo,whohavebeensufferingfrombullyingandschoolviolencethroughouttheirschooldays,attemptsuicidewhiletheirclassmatesgoonaschooltrip.Thestorymakesusanticipateunbearabletragedies,butthestoryofHailtoHellissomehowlivelyandunpredicta...