My name is Theo, an orphan who grew up in Hacker Street. My only dream is to save money to leave Mars and go to Jupiter to become a mecha knight.
All I own is a shabby mecha pieced together from a garbage dump - the "Titan Killer".
The underground boxing match "Hellfire" was my only chance. If you win, you will get 100,000 credits and a ticket to the future; if you lose, there will be no bones left.
But I didn't expect that the first game would be planned by a shady plot, and the opponent would be the "Bone Crusher" who became famous for massacre.
What's more, I didn't expect that when my mecha was smashed and I was on the verge of death, I would erupt with strange power and control my remaining body to fight back...
I didn't expect that not only would my mecha be robbed after the game, but I would also be charged with "stealing federal property" and imprisoned together with the white-haired girl "Zero" whose identity remains a mystery, who saved me once.
It wasn't until the cold handcuffs locked my wrists that I understood:
Behind this arena is a giant man-eating beast.
The girl next to me named "Zero" is a taboo that can ignite a spark.
And the power awakened in my body that can control mechas like arms... May be the key that is enough to subvert the entire solar system.
