Shu is from Datania, a country that makes young children work. He and his friends were trying to escape when they met the Returners. The Returners are some kind of rebels to Datania. Shu goes with the Returners to fight Zero, Nines, and his men who are after DT, a special substance inside humans. (Source: ANN)

On their way home from high school, Tamahi and some classmates are shocked as they witness someone fall from the rooftop of nearby apartment. Panicked and confused, they rush to the building only to find it deserted. As Tamahi wonders about this, she has the uneasy feeling they are being watched. What is the strange presence around her... (Source: HIDIVE)

To succeed to his father, Lid Kail sets out a journey to defeat the incarnation of the evil that seems to dominate the world. Longn and Mimau also began to journey to achieve his father’s will. On their way, Key and Bagda join them. They overcome some difficulties, and finally they met Vaii, the evil. They managed to beat Vaii, but it still doesn't solve their problem... (Source: Animenfo)

Two brothers are riding around on their hover bikes, when suddenly a giant metal fortress gets in their way. After a brief battle, the duo manages to gravely wound the fortress. It retreats and dumps our heroic pair in a wasteland. But this wasteland is inhabited by nomads that indicate that the fortress was hidden inside a mountain. The nomads plead for the duo to finish the job. Two of the natives go with them as guides, and somewhere along the way the gain the help of a fairy that can transform into a mech-warrior woman. (Source: irreality.org.uk)