Nono is a clumsy waitress who dreams of becoming a space pilot. One day, she meets Lal'C Melk Mark, a member of the elite psychic pilot team "Topless." But when space monsters appear from out of nowhere to wreak havoc on Mars, Lal'C calls out her Buster Machine—codenamed "Dix-Neuf"—to subdue the threat. During a battle with a Space Monster, Lal'C gets the surprise of her life when she sees Nono use her super-strength to help Dix-Neuf destroy the alien. From that point, Nono hangs along with Lal'C in hopes of becoming a member of Topless.

Less than a year after Geist activated the Death Force, which decimated most of Jerra's population, he has kept himself busy by dismantling the Death Force machines one by one. Most of the remaining human population have fled to a remote haven run by a warlord named Krauser. Krauser is another MDS unit, MD-01, who has a technology that hides his mobile fortress from the Death Force.

真夜中之侦探，讲述的还是关于吸血鬼这个永恒的话题：在百鬼夜行的东京，只有身为吸血鬼的紫藤可以与之对抗。成立侦探社，以侦探之名掩饰身份，与人类共存的紫藤，在同伴布利德出现之后，不堪的往事被慢慢重提……
紫藤：已活了300年的吸血鬼，开了一家侦探事务所，为保护人类而与夜灵作战。
理保：家人为夜灵所害，在紫藤的侦探事务所打工的少女。
弥生：美丽精干的nos警员，并提供紫藤的食物（血）。
咕哩：一直跟随着紫藤的有着一对翅膀的绿色的小妖精、
夜灵：一种夜间出来的恶魔，种类很多，为了得到光明，千方百计想要获得人类的身体。