Aiko and Hashimoto discovere a VHS videotape called "A Guide to Surviving Zombies From". This is a video with a set of instructions that will help them cope with the invasion of the undead living in Japan.

梓的妹妹惠自杀身亡，梓认为事情另有蹊跷，展开了追查。 梓打听到，有个神秘人正在进行“援助交际扑灭运动”。此人假借援交之名接近女高中生，和她们发生关系后，残忍地在她们身上烙下“母猪”的印痕。 梓想起惠的大腿上也有这样的烙印。难道妹妹是那个变态神秘人的牺牲品？！梓获得了惠的同学彩的帮助，准备引蛇出洞，为妹妹复仇。然而她并不知道，等待着她的是超乎想象的可怕地狱……

Wracked with guilt over her younger sister's suicide, pretty young karate student Megumi accompanies a group of older friends on a camping trip into the woods, where they're attacked by feces covered undead.