改编自北田龙马创作的同名漫画作品，动画以被会夺取人类H能量的谜之侵略者“寄生虫”所威胁的世界为舞台，讲述了高中生炎城烈人作为守护地球的英雄集团的一员，与寄生虫战斗的故事。
The world of Remnant is filled with horrific monsters bent on the destruction of humanity. Fortunately, the kingdoms of the world have risen to combat these forces by training powerful Huntsmen and Huntresses at academies around the planet. Ruby Rose, Weiss Schnee, Blake Belladonna, and Yang Xiao Long are four such Huntresses in training whose journeys will take them far past the grounds of Beacon Academy. Though each may be powerful on their own, these four girls must come together to work as a team if they truly hope to become the next generation of Remnant's protectors. But can they succeed at each other's side when dark forces gather to divide and destroy humanity?
世王集齐了世言铠，恢复了往昔的强大力量，他企图违背自然规律，加速进化进程，让“毁灭之力”席卷世界。灵犀令牌被毁，十阶冲破封印在即，黑暗再次降临。为了拯救人类世界和叶罗丽仙境，叶罗丽战士们不畏艰险，勇敢回到了自然之力充沛的远古仙境，向当时正处于力量强盛期的仙子们寻求帮助，与此同时，灵犀阁也开始行动，设法解救被薇夫人控制的伙伴们，并牵制住十阶。面对强大的灾难，人类并没有被打倒，而是选择凭借智慧和勇气，齐心协力应对挑战。人类与仙子们团结起来，一场关于爱与守护的终极决战即将打响!
飞贼风铃儿与商贾之女白钰袖一同结伴闯荡江湖，殊不知在她们的背后正孕育着一场巨大的阴谋。
大坏狼（山姆·洛克威尔 Sam Rockwell 配音）带领坏蛋联盟五人组欲意改邪归正，却遭“狂野姐妹”上线踢馆，面对再干一票的诱惑，是重操旧业还是反杀破局？
修仙大陆有一位大能者，意外穿越到了现代英雄社会，在这渺小的地球中仙法和超能力展开了激烈的对抗。
