The Organization is divided into blocks. A. B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. Y. Z. Nobody really knows what criteria they use to sort people into them, but it's not just up to luck.

The perfect examples of this are Block A and Block B. Block A is made up of the veterans, the sort of people legends are inspired by, the ones who aren't old enough to retire. And haven't died yet. Block B is the youngest team in the organization which has ever reached such ratings of success. Killing. 

Their job is to exterminate the enemies of their species. A strange race that started appearing years ago and lunged straight at the throat of every living person, fangs bared. The boys had never questioned their duty to protect their society. They were practically super heroes. 

Then, why, when they discover the existence of a so called Block X, and happen upon it, do they start doubting the morality behind the Organization, if not, everything they've ever been told? Everything they know.