Flint Sparks, the mercenary Dog, and his human master, Jon, are attacked in the dead of night - leaving Flint alive in the bloody aftermath. They killed his human, Jon. He now wants revenge. Flint Sparks and his human Jon, both former mercenaries, have settled down in quiet retirement from an industry where the job is supposed to be forever. But, unlike anyone before, they found a way out. However, this new life, filled with peace and...