The year is 2046. Detective Ross Sylibus is transferred to Mars when a country singer on her flight is murdered. Making matters more complicated is that the singer is a "Third"—a robot that looks and feels like a human. Sylibus is partnered with Armitage—a beautiful female cop with a bad attitude. As they investigate the murder of the singer and other women on Mars, they uncover a conspiracy that can have them both killed by the Martian government.

Once, vampires and humans lived in harmony. Now, a young girl and a vampire queen will search for that Paradise once again. In the divided world of the future, two girls want to do the forbidden: the human wants to play the violin, and the vampire wants to see a wider world.

In a certain distant land, home to numerous intriguing towns and people, many wondrous sights can be found. Traveler Tortov Roddle encounters a curious patch of red berries and after sampling one, happily indulges himself with more. He soon realizes, however, that this delectable fruit has considerable hallucinogenic effects and finds himself partaking in his greatest trip of all. Elsewhere, a little girl finds brief yet fantastical escapes from her everyday life. In yet another city, residents are baffled when giant black apples begin raining down from the sky, but find that they may have use for them. A journey into the extraordinary, Aru Tabibito no Nikki Specials explores the surreal occurrences of its setting, and how the land's inhabitants react to certain dreamlike experiences they encounter.

Today, the imperial court is soliciting traversals, giving them various positions according to their talents, changing the civilization after the fall, and trying to create a new world. Zuo Yunqi is just an ordinary young master, mixed with the court in disguise as a spy to save his father. However, he was recognized by one hired specifically to spot such spies, and the two engaged in an epic battle of wits. When the two jointly prevented a terrifying conspiracy, they found that the traversals secretly established an alliance to try to overthrow those in power and build a new society of peaceful coexistence. Zuo Yunqi and his party were forced to participate in this battle.