A/N: Okay so this is an AU Buffy X-over story with Charmed. It's a Buffy/Faith, Willow/Tara, Billie/Pheobe and a bit Leo/Piper story. And ummm I had to change some of their ages just a little bit so btw Prue 29yrs, Piper 26yrs, Pheobe 23yrs, Billie 17yrs. So... I hope you all like it! :)

Charmed

"Pheobe!" Billie yelled as loudly as she could, shutting the door of the Halliwell residence behind her with a bang. The young blonde paused to listen for a reply but none came. Thats weird she thought, the sisters should have been expecting her. She always came over on sundays while her mother was at church. She sighed and collapsed onto the couch lazily, reaching for the remote to turn the TV on. As she sat watching morning cartoons she heard the back door open, looking up to see if Pheobe was back. Piper entered, looking extremly puffed, and rushed straight over to the stove.

"This better not be burnt or I'm gunna kill that demon all over again" she growled as she pulled the oven door open and let out a sigh of relief to see her lemon merang pie wasn't burnt to a crisp. Prue and Pheobe too entered shortly after, the youngest sister closing the back door after them and dusting of her hands.

"God, that was disgusting" she sighed, turning on the tap to wash the dirst, slime and grime off in the sink and drying them off quickly on a tea towel as she turned around again "and these where brand new... Billie!" she blushed as she noticed the teenager lounging on the couch listening to them with a smile. Pheobe grinned, skipping over to greet the blonde happily with a warm hug. Prue and Piper peered into the lounge room to watch with with knowing smiles. Billie was their next door neighbour and had always had a crush on the youngest Halliwell, though Pheobe had never realised.

"Billie, hey" Piper grinned as she slipped on oven mitts and reached into the oven "I just baked some lemon merang pie, either of you girls want a slice?" she asked as she pulled the pie out of the oven and smiled as the lemony scent drifted up tantalisingly.

"Yes!" both the girls in the living room chorused loudly at the first offer of food. Prue laughed as she watched them, wrestling for the remote, as they could never agree on watch to watch. The eldest sister turned back to Piper, giving her a knowing look and taking a seat at the kitchen table to wait for her own slice of pie. It was another comfortable, all too familiar sunday morning. That is untill a loud thump was herd from upstairs and dust fell down from the ceiling on the impact of an something unknown. All three Halliwells froze while Billie looked up towards the stairs and cocked her head curiously, in that way which Pheobe thought was just absoloutley adorable.

"Pheobe, just wait down here with Billie" Prue commanded, taking charge in crisis as she always did, and beconded for Piper to follow her as she made her way cautiously towards the stairs. With a sigh, she placed her pie carefully down upon the bench to cool and followed Prue up the stairs carefully. Billie and Pheobe watched from the couch nervously as they took each step slowly and quietly, making their way up till they where out of sight and the two where left alone in the living room. Pheobe sat up properly, keeping her eyes peeled for any sense of movement or danger, feeling extremly protective of the scared looking blonde beside her.

"It's okay Billie, don't worry, I wont let anything happen to you" she leaned forward to whisper in Billie's ear, giving the younger girl a comforting smile. I hope Prue and Piper are okay the youngest sister thought with a sigh I wonder what on earth it was that made that noise...

Buffy, The Vampire Slayer

"Will, m..maybe you shouldn't g..go, I mean, something's o..obviously not r..right with Buffy" Tara stuttered nervously, reaching out to stroke her charge's fiery red hair softly. Willow should head head defiantly, pulling away from her white lighter and whiping her tear streaked cheek, her sobbing still not subsiding.

"No! Tara, it's Buffy, my best friend, I have to help her!" the red head exclaimed through sobbs, and slung the bag of ingredients over her shoulder "I'm sorry Tara, I have to do this". And with that Willow took a deep breath, turned and opened the door only to find the blonde slayer standing in the door way, a manic grin spread across her face as she stepped across the thresh hold, hands on hips.

"Where do you thinking your going?" she asked tucking an annoying strand of wavy blonde hair behind her ear and taking another step closer. Willow swallowed loudly, reaching into her bag for the spell she had concoctued earlier but Buffy was to quick, reaching forward and grabbing the wicca's hand before she could do anything.

"Uh uh uh red!" she shook her head at Willow, twisting her wrist till a loud crack was herd and the red head yelped in pain "Don't even think about it angel cakes" the slayer snapped at Tara as she'd started to rush to her charges aid. Through her tears the wicca looked up at her best friend heart broken as the blonde let go of her now broken wrist and let her fall and crumple to the ground.

"B..Buffy, how could you..." she sniffled till a realisation set in and she looked back up at the slayer wih questioning eyes "wait, did you just call me... red?" she asked, swallowing loudly as she now knew what was really going on "Faith?". Buffy's eyes narrowed as she looked down upon the red head and lifted an fist to strike her when Tara screamed, the slayer looked up stunned and in a second both the wicca and white lighter where gone in a blink of bright white light.

Charmed

"Shhhh baby" Prue and Piper could hear a soft voice whispering from through the attic door. Piper frowned, reaching out a hand to gently push the door open with a loud, painful creak. As the source of the loud noise was revealed the Halliwells where surprised to find two sobbing girls huddled upon their attic floor. As Prue took a step forwards the girls looked up, the whimpering red head wrapped in the brunette's arms.

"Hey, it's okay" Prue told them softly as she saw the fear in their wide eyes "Piper, could you go get Leo?" she turned slowly to ask her sister. Piper nodded, quickly exiting the room. Prue turned back to the girls to find the brunette now smiling and rising to her feet as she looked from Prue to the book of shadows and back.

"You... you must be the charmed ones" she murmured in awe as she helped the shaky red head to her feet "It's okay Will" she cooed the shaky girl beside her, smiling at Prue "we're in good hands".

X.x.X.x.X

"Here Tara, take a seat" Leo steered the two girls towards the couch and took a seat next to them while Piper, Prue, Pheobe and Billie all crowded round, sitting down on the floor to listen silently. Tara smiled shyly, feeling uncomfortable under all the attention but she knew it was time to tell them all what was going on.

"Well.. I'm pretty new as a white lighter" she told them all, squeezing Willow's hand for comfort "Willow's my first charge. A..and her best friend, Buffy, is the s..slayer. Or technically a slayer because there's two at the moment. T..the other one is F..faith, except F..faith kind of went...evil. And Buffy put her in a c..coma, but she w..w..woke up. And she st..stole Buffy's body and she's kinda nuts and I sw..swear she was gunna k..kill Will till I orbed us outta there..." she sighed, looking down at her fragile charge. Her little Willow was usually so... full of life. Energized and ready to do anything. Tara wasn't used to her being like this, she'd only seen her in this kind of state once before over Oz, quiet, sitting there like a thin, million dollar, delicate glass vase.

"The slayer, you've met the actual slayer?!" Leo was now the one in awe, till he saw the four girls giving him confused looks "The Slayer: To every generation a slayer is born, one in all the world who can slay the vampires and protect the innocent, when one dies another is called..." he recited excitedly. Piper watched him dreamily, reveling in his impish smile and childish excitement.

"yea yea yea, super strength and agility, blah blah blah, but Oh My God, the Charmed ones!" Tara squeaked, gesturing to the girls and then stopping, staring at them in confusion "wait, I thought their where only three!" she pondered aloud. The Halliwells all smiled, turning to look at Billie.

"Oh, I'm no-one!" Billie quickly piped up, blushing slightly at the attention and tucking a stray strand of blonde hair behind her ears nervously. Pheobe looked sideways at her, narrowing her eyes and reaching up to hit the blonde on the head lightly and shaking her head at the younger girl.

"She's not no-one. She's Billie!" Pheobe grinned up at Tara "our next door neighbor, very good friend and fellow Wicca" she giggled, leaning across to kiss the scowling girls head better affectionately where she had hit it. At this the blonde's cheeks burned bright red and she took to admiring the pattern of the carpet while Leo watched her and smiled. When will Billie admit her feelings already? he wondered, laughing quietly to himself before this thoughts where interrupted by the oldest sister clearing her throat loudly.

"Anyway!" Prue interrupted their tangent "you obviously need our help, what can we do?" she asked Tara as she noticed that her charge seemed incapable of talking, she hadn't uttered a word since she'd arrived in their attic, she just sat their clinging to her white lighter like her life depended on it. Tara sighed, rubbing her thumb of Willow's knuckles as she held the fragile witches hand gently in her own.

"We need to return their souls to their rightful bodies" the red head rose her head and spoke for the first time.