Disclaimers: I have never been to the island mentioned in this fic, and I don't even know if there is a real 'Isla la Luna' anywhere in the world. So I don't own that. I don't own H20 either, but I do own Liz, Marie, Ava, and Jemma, as well as any OC characters in this.

Enjoy!

Chapter One

Transformation

Elizabeth Moore's brown eyes fluttered open, staring blearily at the ceiling. She glanced around, looking for what had woken her up. Nobody and nothing. Then her phone buzzed again, vibrating against the white-painted wood of her desk. The brown-haired girl dragged herself out of bed, stumbling over to the desk and picking up her phone. On the screen, a message glowed, from Marie Jackson. Wake up, sleepyhead. My dad wants me to go on this 'super-fun family camping trip' on one of the nearby islands. Want to come? Please, don't leave me hanging alone with only my family to keep me company. Liz chuckled. Marie was one of Liz's best friends, the others being Ava Harris and Jemma Thompson. Marie could also be quite a drama queen at times, but it only made Ava, Jemma, and Liz like her more. Yes. I'll talk to my parents. How long, when, and where? And really, I thank you for waking me up at such a god-forsaken hour of the morning, Liz typed back. Sarcasm was her specialty, and she had honed it to perfection. The phone buzzed again quickly, the message reading: Ha ha. It's already nine. This is not early, even for a Saturday. The trip will be for two days, this coming Saturday, and it'll be on one of the Keys. Place is called 'Isla la Luna'. I think it's Spanish. Liz rolled her eyes, imagining Marie grinning. I planned to sleep as long as I could. Now go pester someone else J. Thanks for the info. And duh, it's Spanish. We took Spanish in middle school, remember? The reply was prompt. Very well. I shall leave her royal laziness to sleep for as long as she wishes. Or until night falls again, whichever cometh first. And I promptly forgot all of my Spanish as soon as I didn't have to prove that I knew anything. Elizabeth padded over to her closet, consigning herself to the fact that since she was awake, she might as well get dressed.

Twenty minutes later, (and half of the house's hot water) Liz stood in front of the bathroom mirror, carefully applying a light layer of blue eyeshadow. She was wearing a royal blue halter top and jean shorts. Her brown hair, which typically stretched half way down her back, was done in a messy bun. A pair of dangling silver teardrop earrings and a touch of pink lip gloss completed her ensemble. A sharp knock on the door disrupted the quiet, accompanied by the voice of her 13 year old sister, Jenny. "Liz! I need the bathroom!" Jenny was two years younger than Liz, who was 15, and they had been very close as kids. But as Liz became a teenager, and Jenny stayed a kid, they drew apart. "Okay, Jenny. I'll be out in a sec." The older girl closed her makeup case with a snap, unlocking the door and letting her sister in. "Thank you." Jenny closed the door as Liz walked back to her room.

Over breakfast, Liz brought up the topic of her going camping with Marie and her family. "How long will this trip be for?" Her mom, Hannah, asked. "Two days. We'd stay there for the second weekend before school starts again. Marie was going to text Ava and Jemma to ask if they could come, so it'd be six of us if they can come, not counting me." "And where did you say it was again?" Her dad, Richard, interjected. "On one of the smaller keys. Isla la Luna." Her dad nodded slowly. "I think it'll be okay if you go. As long as you promise to be responsible. This Marie girl is a little too much of a rebel to me." Liz smiled in relief. She could go! Though only if mom permits it, she reminded herself. She glanced hopefully at the brown-haired figure of her mother. Her mom picked at her cereal. "I don't know…." She finally said. "You'll be out in the ocean, miles from land, with only Marie's family and your friends." "Mom, Marie's been my friend for years. They took care of me when you were sick with pneumonia." Her dad nodded again. "I say we let her go." Her mom finally conceded. "Alright. You can go." "Thanks mom. Thanks dad." Liz got up from her seat, carrying her empty bowl of cereal. She stopped in the kitchen, pulling out her flip-top phone to text Marie and tell her the good news.

A week later, Marie tossed the navy bag into the motorboat, the metal tent poles clattering against each other. It was Saturday, and they were heading off on their camping trip. "Be careful with that!" Her mom, Hannah Jackson, called. She was sitting next to Marie's older brother, Chris. Marie rolled her eyes, clambering out of the boat. Her pink flip-flops slapped against the concrete dock as she walked over to Ava, Jemma, and Liz. Marie was a black-haired girl whose curly hair stretched halfway down her back. She was pale-skinned, but she tanned instead of burning. Her friends all burned, and there was always a bit of playful envy whenever someone got sunburnt. She was an average height, being 5'6", but constantly thought she was short and wore shoes when heels whenever she could. The black-haired girl leaned against the railing beside the others, enjoying the sea air on her face. "Planning on getting a tan?" Ava asked. "Maybe…." Marie grinned. "Jealous?" "A little." Ava's loose red hair blew in front of her freckled face, and the girl brushed it out of her green eyes. Ava's dad was British, and she took after him. Her mom was a platinum blond American from Tennessee, and a lot of people thought that they were friends or something, instead of related. She was also on the tall side of average, but preferred to stay invisible among a crowd rather than standing out like Marie. Her clothes reflected that, which was why she was wearing a pair of jean capris and a green blouse with brown strappy sandals. Jemma laughed. "Every time. Ava, you do know that there is something called fake tan, right?" Ava laughed along with her. Jemma's hair was dark brown and wavy, reaching halfway down her back as well. She had grey eyes and freckles, and preferred to wear contacts rather than glasses. She was wearing a pair of jean shorts and a blue tank top with a white jacket over the top. Blue flip flops and two little diamond stud earrings completed her outfit. Liz glanced out at the distant shape of Isla la Luna. "It'll be interesting to visit one of the islands. I've never really been out there." The other girls nodded in agreement. Liz was clad in a pink tunic with shorts that barely poked out from under the long fabric, gold sandals, and little gold flower earrings. Her long brown hair was down, letting the playful breeze play with it. "Girls! Time to go!" Mr. Jackson, Marie's dad called. The four friends hurried over, sitting down in the boat and chatting among themselves as the engine started and they sped towards Isla la Luna.

Ava splashed into the shallows, helping pull the boat up to the shore. The island wasn't all that large, mostly beaches with a little bit of jungle and a large… hill? In the center. It couldn't really be called a mountain, but it was too large to really be called a hill. She and Liz picked up the tent and the cooler of food, setting it down on the sand. "So do we set up the tent here?" Ava called. "Yes. We'll camp here on the beach since it's so nice," Mr. Jackson called back. Within 30 minutes, although with a few tent-related difficulties, they had a campsite set up. Night was starting to fall, the dying sun painting the sky in shades of violet and rose. The five people sat around the fire, roasting hot dogs on wooden skewers. Ava raised her hot dog to her mouth, taking a bite right off the wood and fanning her mouth to cool it. She set the empty skewer down on the top of the cooler, standing. "I'm going to go swimming. Anybody want to come?" Jemma nodded eagerly, and Liz and Marie followed them into the tent. They emerged, all of them clad in different colored swimsuits. Jemma wore a pink and purple striped one-piece, Ava wore a yellow and green striped bikini, Liz wore a blue bikini with purple straps, and Marie was wearing a plain red bikini. They ran for the water, racing each other and laughing as they splashed into the surf. Ava waded out further, then slid under the waves. She glided through the water, her green eyes flicking lazily from one thing to another. She loved the ocean. Cool water slid smoothly over her skin, making her loose red hair fan out in a rosy cloud. A school of silvery fish scattered as she soared past them, her bare feet kicking in the water. She slowly rose towards the surface, taking a breath as she surfaced near the shore. "We should get back," She said as Marie, Liz, and Jemma surfaced beside her. "The sea can be dangerous at night." She ducked back under as she swam in.

As the four girls slept, the glowing orb that was the full moon rose over the island. The beaches were painted in silver light, the leaves of the forest gleaming like they were forged of burnished metal. Slowly, Liz's eyes fluttered open. She sat up, her brown eyes gleaming like twin moons for an instant. Marie, Ava, and Jemma woke slowly, all four of them rising from their sleeping bags. Marie led the way out of the campsite, the girls making their way into the forest as if drawn by an invisible string. They moved through the forest, stopping before a small waterfall. Marie glanced up at the moon, the light making her face look alien. The black-haired girl seemed to glide across the slippery rocks, suddenly vanishing through a dark hole. Ava, Liz, and Jemma followed, disappearing into the earth.

Marie landed hard on her bottom, blinking wildly and shaking her head. She looked up, staring around. "What the hell?" She stood, brushing sand off of her PJ bottoms. A scuffling sound startled her, and seconds later, Ava, Liz, and Jemma all crashed into each other on the sand. "Get. Off. Me." Ava growled, shoving the other girls off of her back. "Where on earth are we? The last thing I remember is falling asleep in the tent," Liz said. Jemma peered up the tunnel they had fallen down, trying to climb up. "It's too steep. We can't get up that way." Ava glanced around, her green eyes scanning the cave for a way out. "Hey. It looks like there's an opening over there," She said, leading the way through the cleft in the rock. They stepped into a larger cave, their eyes met by an impossibly beautiful sight. Before them, a perfectly circular pool of royal blue water sat, undisturbed. High above, an opening pierced the rock and ringed the glowing silver moon. "I'll check if there's a way out through the water," Liz said. She waded into the water, ducking under. She returned quickly. "There's a tunnel that leads to the outside. We can escape through there." The other three nodded, quickly wading into the water to join Liz. As soon as they all floated within the pool, the moon reached its peak over the island. The pool began to bubble, tiny droplets seeming to drift down from the moon and collect on their skin. They looked like they were glowing silver, like luminous beings instead of ordinary, earthbound creatures. The girls looked up at the moon, their eyes reflecting it, spellbound. As soon as the moon's edge touched the rock rim, the spell was broken. Marie shook her head, dispelling the remnants of the moon's power. "Wow…" Liz breathed. "What was that?" "I don't know," The black-haired girl answered. "We have to get back." The four dove beneath the faintly bubbling water, making their way back to the shore.

This is my first published H20 story, so please review and don't flame. Constructive criticism in very much accepted.