You don't know it yet, but you are a werewolf. Tonight, as the full moon rises above your head, you will transform into a monstrous killing machine, and nothing can stop it. There are several stages you will go through during this process:
You are in bed, ready to get a good night's sleep, all nice and cosy, when all of a sudden a strange feeling washes over you. Your body temperature begins to rise uncomfortably. Breaking out into a cold sweat, you throw the sheets off of you, and walk over to the open window in your room. You find yourself in a mysterious trance as you stare out of the window. The full moon peeks out from behind the dark clouds, illuminating the sky. Before you have time to process this situation, you are immediately hit by a sudden wave of intense pain all over your body. The transformation is starting.
You double over, clutching your stomach with one hand, gripping the windowsill with the other. You try to cry out, but nothing comes out of your mouth. A wave of sickness and disorientation washes over you. What is happening? There is a burning heat in the fingertips of your right hand. You lift it from your stomach and helplessly stare in horror. Your fingernails, they point and file before your very eyes, turning into a very dark, dirty shade of black. Now it's happening to the other hand, too! There is a prickling in your chest. Short, black hairs are growing in a tuft in between your breasts. It slowly begins to move down your stomach in a thin line. The heat is becoming too much to bear.
You rip your tank top and pajama pants off, scratching your skin, leaving you in nothing but your undergarments. You wince at the sting of drawn blood and grit your teeth in agony, and drop to your knees. You can feel your canines beginning to point in your mouth with your elongating, roughening tongue. Your gums bleed, and you taste the metallic flavor of blood in your mouth, now agape in shock. More hairs begin to pop up, this time on and around your shoulders, covering your shoulder blades, moving down your arms. You feel another tingling sensation on the tips of your ears. They are beginning to point to the corners of your pounding head. Similar claws to the ones on your fingers begin to form on your toes. You claw at your bra to unhook it, but all attempts are futile as it naturally snaps off.
You hear a series of muffled pops in your claw-tipped hands. Once again, you can only watch as your hands begin to change shape. Pads of thick, dead skin form on the palms of your hands. Your digits shrink slightly, as your hand grows longer and wider, into the paw of a canine. The same happens to your other hand, with a symphony of pops and quiet crack. A cry escapes from your lips, and you drop to all fours. The hair is growing at an alarming rate at this point, all around your torso and arms. It begins to grow around your widening pelvis and genitals, as your underwear rips off. You can feel similar changes happening to your feet as they did to your feet. You can feel the pads of dead skin forming on the bottoms of your feet, the same pops and cracks as your insteps narrow and lengthen, largest toe traveling up the sides of your back paw to form a dewclaw on each paw. The hair begins to grow on your legs, covering all extremities, as it rises up to your neck and face. Your canine teeth begin to uncomfortably fill your mouth. You gasp for more air.
This are really beginning to escalate as your emotions shift from pain and fear to sheer terror. Your back arches with the loudest, most painful snap. You scream, but what comes out sounds like a mix of the shriek of a woman and the cry of a wild wolf. Your ribcage and lungs expand, depriving you of oxygen for a few long moments. The hair begins to thicken into jet black fur, with the feeling of millions of need poking your skin. A thin layer of hair grows around your face, as your nose blackens, covered in moisture. There is a pressure in the front of your skull, as the bones in your face push outward slightly. At the base of your spine, a thin bone begins to poke out, stretching your skin, forming a wolffish tail. Your was begin to grow tiny hairs, pointing outward. The pain, you notice, has turned to pleasure, and you begin to give in to the moon's pull. Your vision clouds.
The hair has turned into thick fur. Your ears expand, opening up and dramatically enhancing your hearing. Your tail pokes outward more, having grown hairs like the rest of your new body. Your fangs have grown to maximum size, taking up most of the room in your salivating mouth. Your face begins to push out even more, forming the muzzle of a canine. The bones in your muscular legs shorten and change shape to the stature of a wolf. The change is almost over, and any last ounce of your humanity is consumed by the savagery and instinct of the wolf, longing to be free.
Your tail has formed completely, wagging in the air, ready to hunt. What was once a small, feminine human is now a beastly wolf who knows nothing other than destruction. You open your eyes one last time, revealing bright yellow irises and thin pupils. You howl at the moon, and dash out the window, ready to hunt for food, find your mate, and roam free into the night.
You wake up in the middle of the forest, completely nude, with a pounding headache. Great. You have no memory of what happened last night. All you know is that it is time to adjust to your new life as you make your way home.