(Cool, really?!)
Well, it starts with Uran getting bullied at school. (She and Cobalt are in the same class.)
She asks Astro why robots are treated badly. Astro doesn't give a real answer, but suggests that they get upgraded. Uran went crazy about the idea.
So, Dr. Elefun upgrades them with the latest armor and weapons.
(Astro had:
Full armor like a knight. They come out from a circle in his chest, like a transformer. His finger lasers are now laser machine guns. His but guns... are now rockets. XD His arm cannon is stronger (like in the 2003 series, he only has one). And now, his other hand transforms into a black sword.
Cobalt: The same things as Astro, except his sword is smaller
Uran: Still talks to animals, and now knows different languages, even alien and monster ones. (a translator. :lol

She grows wings, and can fly like Astro and Cobalt. She wears a band around her thigh, which when she grabs it, it turns into a long, sharp stick. Vines grow from it, and wrap around her hand. She also has a bow and arrow.)
Cobalt walks out of the Ministry of Science, planning to try out his new weapons.
Then, a monster attacks Cobalt. Cobalt was unprepared, and Uran saves him. Cobalt gets mad at her, saying that he could have killed the monster by himself. Since Uran has been down in the dumps, she was hurt by Cobalts rudeness. Cobalt runs away, back into the Ministry of Science to find Astro.
(I don't want to spoil to much about it, so I will just speed up with the rest that I have right now).
Uran is killed brutally. But, before she dies, she gives Astro her memory card (before sh dies). The brothers (Astro and Cobalt) were angered over Uran's death.
(Thats all I have for now. Hope chu all like the plot. I will finished some more pages, and then try to post it here on the forum.

)
EDIT: Uran and Cobalt are twelve and in middle school, Astro is sixteen and in high school.