It's the turn of the nineteenth into twentieth century New York. A pair of bull terriers - a mother and son - live on streets of the Bowery, they managing both to survive in scrounging for food primarily in the garbage cans of restaurants, and evade capture by the dogcatcher. The son's mission in life has been to kill his father, who abandoned them. The son has discovered his father's name, but has no idea his whereabouts. The son is left on his own when his mother doesn't return to what has been their sleeping location at the end of the day. Thus, he adds another task to his life mission: to find his mother. But in addition to these two tasks, he still has to survive, which, without his mother, he believes he can do more easily under the care of a human master. As such, he bounces from one master to another, some situations obviously better than others in the motivation of said masters, one who gives him the name Wildfire. It is the interplay between his human handlers and his respective relationships with them that will dictate what happens to Wildfire.
—Huggo