Humans are actually from another planet, a warrior race, that gets special powers from the Guardians, which only they can see and hear but only their own Guadian.
Thousands of years ago, the Humans helped an almost extinct, unkown Race. The mysterious Race then revealed themselves to be an ancient Clone Race, meaning they can take the form of any living being they touch. They had all come into contact with at least one Human at some point and they all took the form of Humans, they then used that advantage into tricking the Empire, into thinking the Humans were plotting against the Empire. So they were banished, light years away from their own Solar System, into one with a blue and green planet that would be known as? Earth.
But that was not enough for the Clone Race. So they found a sorceress to put a spell on the Humans, to make them all forget who they really are and where they come from. This would also eliminate the knowledge of the Guardians existence and before you can see a Guardian, you must be aware of it?s existence.
So what do you think?
I'm just posting this at few sites I have accounts on. Like my tumblr.