Johnny Rico is a high school student living in Buenos Aires, who doesn't know what to do with his future life. When his friend Carl and his love Carmen, whom he grew up with, join the Federal Military, he does too enlist in the hope to chase after his love into space. However, a war is brewing on the outer planets with a strange bug-like alien enemy and Johnny is thrust into conflict. (Source: AniDB)

Shougo Yahagi is a young motorcycle enthusiast living in a world of hot bikes, hard rock, and J-pop idols. The general populace go about their lives in peace, under the watchful eyes of a computer program in the guise of pop idol sensation Eve, unbeknownst to them. Shougo himself is mostly concerned with riding his motorcycle and picking up beautiful women like Yui Takanaka, who aspires to be a dancer. Shougo's life suddenly changes when his friend, Shinji Nakagawa, shows him a top-secret project: the "Garland," an advanced motorcycle that can transform into a robot. Ambushed by the military, Shougo hijacks the Garland and escapes into the city. Evading the military with the help of Yui and her friends, he gradually discovers that their idyllic society is only an illusion. [Written by MAL Rewrite]

Ritsuka Tachibana. She lives a calm and unchanging life. Ritsuka's older brother Lindo returns from studying abroad in the United Kingdom. Shikou Academy student council president Rem Kaginuki calls on the girl, and she begins having mysterious encounters with the student council members. Her life changed a little from that day, but Ritsuka expected nothing more. However, she comes home to find her mother collapsed with suspicious hooded men nearby. They were not human but devils, vampires, and exorcists seeking the Forbidden Grimoire. Ritsuka's former daily life crumbles around her, and she finds herself slowly becoming attracted to Rem, who helps her in her predicament. On the other hand, confusion deepens with regard to her brother who carries a secret. Ritsuka is unsure what path to choose as she finds herself at the center of a love story.

Thirteen years after their sudden disappearance, an alien race known as the Heterodyne resurface without warning. To combat the Heterodyne, three office workers from the 21st Century Security Corporation operate Dai-Guard - a giant robot no longer regarded as an oversized paperweight. Unfortunately, Dai-Guard is somewhat obsolete and in disrepair. It's a tough job, but salarymen can also save the world. (Source: ANN)