The weight of a feather

Our world, ever so peaceful would've never been as peaceful without them...the guardian angels from a city within the sky: the Odyssey. They protect our world from all unnatural dangers that may occur ever since the beginning of time. Our story follows a young man, Villiam Ortex, who has always dreamed about becoming one of the guardians, who come down to us when help is needed. He's studied hard to become one...but due to his low strength test results he's only made it to be one of those who send out the guardians. One day, however...all other guardians have fallen. There was noone left to come to the rescue...and so...Villiam was called in.