He lost everything in the war (the main losses—his limbs and his future), and after living a few more years in this world, he realized that nothing held him here anymore, and his only friend would be his exact nine-millimeter shot—helping him move on to the next world.
But… then there’s a knock at the door and a dilemma appears: should he take the uninvited guest with him, or see what else this world has to offer him.