The werewolves have overtaken everything. The city is nothing more than a few humans who are trying to stay alive, trying to avoid their fate. You are one such human, a woman who travels with her boyfriend. You've managed to avoid the beasts so far, you and your boyfriend helping each other survive. But one night, this all changes. Howls, scratches, growls. Your current hiding spot has gone under assault by these beasts. Your boyfriend says he will lure them away, that you must hide and run when there's a chance! So you hide in a closet and watch as your boyfriend goes to leave the room... only to be pushed back in.
His back hits the wall and he slumps to the ground, he groans as he slowly rises to his feet, but finds himself falling as he lacks the might to stand. The beast enters, it approaches your lover, its musky cock throbbing with its strides. The clawed hand grabs your boyfriends head and forces him against the shaft, his mouth was opened by his cries of pain, and you see him drink the beasts pre. After it enters, you see your boyfriend give a smile as he starts working the beasts shaft. You cover your mouth, in horror at what you're witnessing. Your boyfriend drinks the beasts spunk as black fur grows on his chest. His muscular body only becoming stronger as a wave of black washes over it, his clothes tearing from the new growth as you spot a tail push out. His hands become claws as his feet shift into paws. His mouth pulls into a muzzle at the same time as his cock begins retreating into a shaft.
The werewolf cums, your boyfriend drinking the seed out of his new muzzle. He drinks and drinks, the fur finally consuming his face and changing him fully into a new beast. The werewolf looks around the room and leaves. Your boyfriend gets to his feet and raises his nose. He sniffs in the air, the sniffs leading him around the room... and eventually in front of your closet.
He grabs the closet door, pulling it off and throwing it to the side. He grins as he sees you, his claw pulling you out of the closet and then wrapping you close to his chest. You rest against him, he now towers above you as you feel his hot breaths against your face. A part of you is yelling run, to try and race away from this beast while you still have a chance. But another side of you is yelling louder, saying this is your boyfriend, and he just wants the best for you. You look into his eyes, looking for a sign he is there, only to find his claws tear away your pants as he enters you with a thrust.
You moan as he rests inside you, you feel his shaft changing, growing. It expands, the tool increasing in size. Your love waits as his knot rises, he licks your neck affectionately until you both know he is ready. His knot is at full size, and you have no escape, your resistance breaks with this realisation.
He thrusts into you, the beast holding you close as he does so. You relax against his furred chest, the black fur giving you comfort and warmth. Your hands exploring the beast's body, feeling his large and intense muscles. His claws grip your shirt, they rip the shirt in half, causing your breasts to feel the cold air, then press against his fur. You look up at your boyfriends muzzle, he stares back at you and stops his thrusts. You see him kneel as he presses his muzzle against your face, and restarts his thrusts as he kisses you. His tongue enters your mouth, and you close your eyes. You feel something from your womb, some strange carnal change.
Your boyfriend breaks his kiss as you lean back and moan, black fur emerging around your vagina. Your legs are covered in this black fur, as feet become paws. A tail emerges from above your ass, growing until it sways against your boyfriend's legs. Your torso contorts and changes, your body becoming lithe as your breasts are covered with fur and grow in size. Your arms end up as claws as they too are consumed by the surge of black fur. All that remains is your head, which has started to see fur creep up it. Your boyfriend feels your new body, playing with your new features as his thrusts continue. You feel so good now, his dick fits inside you perfectly, you realise you are made to be this wolfs bitch. You smile as the fur covers your head, your mouth becoming a muzzle as your ears become pointed.
You howl, which your boyfriend takes as a queue to cum inside you. He holds you tight as he shoots his seed, howling with you. The flood of seed continues for what feels like a few minutes, until it slowly subsides. You rest against your lover, both panting after your mating. After his knot shrinks he exits you and begins to sniff the air. He moves around the room, sniffing, until finally his ears perk up and he moves to all fours. You move to all fours with him and prepare to hunt with your love.