在这部冥王计划动画片中,别名“黑龙”的秘密组织铁甲龙一直暗中进行着统治世界的邪恶计划，他们所研发的巨大铁人兵团所向披靡，领头的八卦中更是实力强大。但在十五年前，作为叛徒的木原正树盗走了铁人的重要部件，秘密来到日本，由此诞生了全新的铁人志雷马。普通青年秋津正人（关俊彦 配音）和美丽少女冰室美久（本多知惠子 配音）被志雷马选为志雷马的双驾驶。虽然不明就里，但正人还是被迫充当起救世主的角色。另一方面，铁甲龙的最高统治者幽罗（庄真由美 配音）锁定了志雷马的位置，于是派出手下的精兵强将前往日本。围绕着神秘的冥王计划，铁甲机器人的状绝之战相继拉开帷幕……
本片根据ちみもりを的同名漫画改编。
Masato, a seemingly typical high school student, has his life turned upside-down when he is suddenly arrested without explanation, after which his parents show up and tell him they aren't his real parents, but actually, government employees paid to pose as his mother and father. He later learns that he had been selected (apparently a long time ago) to be the pilot for a giant fighting robot called the Zeorymer. His assignment is to fight Hau Dragon, the shadowy organization that built the Zeorymer, along with seven other robots they still control.
冥王计划 | AIC萝卜动画。又跑去看了一下原版漫画于是有了新的认识。
