In the world of Mushrambo, human life has all but come to an end. After a deadly virus threatened the extinction of mankind, a new race called the Enterrans was created to preserve life on Earth. However, relations between the Enterrans and their creators did not remain peaceful. Soon a war broke out with the Enterrans fighting against the humans and their robots. Ultimately the Enterrans were the victors of this conflict, renaming Earth as Enterra in honor of their victory. Before the last vestiges of humanity fell, one of the few remaining scientists put his daughter, Yakumo Shindou, into a sleep chamber. His hope was that his daughter would one day reawaken and find the human sanctuary known as Shinzo, reviving humanity and restoring peace between humans and Enterrans. Centuries have passed since the war; Yakumo now awakens and meets an Enterran named Mashura who pledges to assist in her quest. Also joined by the Enterrans Sago and Kutal, the group must now work to locate Yakumo's missing memories and locate Shinzo. But not every Enterran is as kind as Yakumo's new friends and some are prepared to commit any atrocity to prevent the return of humanity.

The world is divided into two kingdoms: the Kingdom of White, which floats in the heavens and is ruled by their queen Iris, and the Kingdom of Black, which stands upon desolate land below and houses the King of Darkness as its ruler. As of late, forces of evil have amassed great power, posing a threat to the entire world. Being the main representative of the Light, it is Iris' duty to maintain the balance of the world and fight off the darkness in her kingdom. Meanwhile in the Kingdom of Black, rampaging monsters annihilate a certain boy's village, leaving him the sole survivor. As he grieves in hopelessness, an armored man named Skeer notices the child and comforts him. Soon after, Skeer recognizes the boy's potential to change the kingdom's status quo and makes him his heir before passing away. The boy then vows to become the Prince of Darkness—the one who will replace the King—to bring the world back to its rightful path. As Iris and Prince of Darkness each challenge the impending doom the world faces in their own respective ways, their destinies will converge with each other, and perhaps, their bond will decide the fate of the world.

Shirobako Specials is an OVA adaptation of the first episodes of the two fictional television anime produced by Musashino Animation in the Shirobako television anime. Exodus!: Shutsu Tokyo Akane, Aya, and Alpine are the three members of the struggling idol group Tracy, which has yet to make a name for themselves. After their performance at a supermarket attracts a dismal audience, the trio's leader Akane decides to turn their fortune around by confronting their disinterested manager Taguchi. But the girls are in for a surprise when they stumble across Taguchi's corpse in a storage room, and become the prime suspects in his murder—all the while rising to the widespread fame they so desperately wanted. Daisan Hikou Shoujotai: FALLING ANGEL The 307 Aerial Squad, also known as Hell Alice, is part of a global military resistance against the enigmatic Builders, who have covered a third of Earth's surface with mysterious structures known as Pillars. With all aircraft built after the 1970s disabled by the Pillars, Hell Alice must pilot their outdated equipment against the advanced technology stolen by the Builders. Among their ranks is the talented, school-aged Japanese girl Aria Hitotose, the so-called Ice Doll who never hesitates in even the most dire of situations. When an operation to rescue survivors from a destroyed base goes awry, it is up to Aria and her trusty allies to save the day.

Average student Mitsuki Mutou suddenly finds himself transported to another realm. Summoned by the king of this world for the remarkable power he is supposed to possess, Mitsuki is thrown out when it appears that he lacks a Special Concept. Moping about, he encounters a priestess named Menou who explains that Japanese people like him are known as Lost Ones, and such individuals never fail to have Special Concepts. Menou elaborates that she is part of a church that helps abandoned Lost Ones integrate into society. She invites him to spend the night at her church, where the two can probe the nature of his ability. Eventually, they discover that Mitsuki's Special Concept is actually incredibly powerful and dangerous. But is Menou's true goal to assist Lost Ones—or the opposite?