Halo Serrie is the best assassin there is, but all that might change when he's forced with a difficult task.
In the aftermath of WWIII, America is left in small colonies on a nearly barren Earth. In the rubble of the Twin Cities, lies an assassin family called the Guild. Their mission; to keep our race strong by eliminating the weak and poor. Halo Serrie, the youngest in the Guild is tested when given a target from their leader. If he kills the target, he will be given the title of Captain, the second best place in the Guild, right under the leader. But everything doesn't go according to plan.
Everything Halo knows blows when his target walks into his scope. His victim being pregnant, he can't find himself to pull the trigger. In the meantime, he decides to let her live, keeping her locked in a house. That is until he could kill her. If the Guild finds out that his target is alive, they'll banish or torture him. But something holds him back from killing her. After looking in to a particualr colony, he finds that the Guild's 'good' intentions of keeping the human race strong, could be a cover up for something more.