Hey guys! Get ready, because a lot is going to happen in this chapter! Please review! I do not own H2O: Just Add Water

The next morning, I was getting prepared for the full moon. I bought sunglasses for the girls to wear, so if they looked at the full moon, they could look away before it grabbed ahold of them. Kaylie noticed my constant running around. "What're you doing?" she asked with an eyebrow raised.

"Getting ready for the full moon," I said without looking at her.

"What's so bad about the full moon?" she asked curiously.

I walked up to the door and shut it. "The full has... certain effects on merpeople."

"Does it affect you?" Kaylie asked with a worried expression.

"Fortunately, I've grown immunity to normal full moons. The special ones are what I have to look out for. But the girls, who have only become mermaids recently, have to watch out tonight. So I'm getting my stuff ready and then I'm heading over to Emma's"

"Oh, okay. That sounds serious," my sister commented. "What will happen if the full moon affects them?"

"You can never know for sure, but it usually isn't a good thing," I shrugged. "Well, I gotta go. I need to do some things before I go over to Emma's."

"Okay," Kaylie said. "Be careful, I don't wanna have to cover for you again!" she laughed.

"Don't worry," I said. "I'll be sure to look both ways before crossing the street!" I mocked her. After I said that I was out the door. I wanted to go for a little swim before I headed over to Emma's, so I dived off my dock and sped away. I stopped when I was in the open ocean. I always loved to look at all the fish and scenery of the ocean. It always made me feel calm, and like I belonged there. But, then again, I am a merman. After exploring the ocean, I took off to Mako. Once I got there, I just floated on my back and looked up at the sky through the gap at the top of the cave. As I began to doze off, I saw a shimmering red blur emerge from the water. Before I could focus on it, it quickly dived back underwater and sped away. Determined to find out what it was, I dived and swam after it. As I darted out of the entrance, I saw the red figure head towards the mainland, so I swam after it. As I got closer, I finally realized what the red blur was.

A mermaid's tail. I tried to focus in on the new mermaid's face, but before I could, bubbles clouded my vision. As the last of the bubbles disappeared, I searched for the mystery mermaid. She was nowhere in sight. I mentally slapped myself for not seeing her face. The only thing I saw was blonde hair and beautiful green eyes. Wait, rewind! Did I just say beautiful? I shrugged it off and got on land to dry. The girls definitely needed to hear about this.

I was now at Emma's front door. I knock three times and the door swung open immediately. "Will! You're here!" Emma said excitedly. "Come in! The girls and I have a surprise for you!" Emma said. She sounded like a little kid getting their Christmas presents.

I came in and set my moon proofing supplies on the counter. When I walked into the living room, Cleo and Rikki were nowhere to be found. I looked at Emma with a confused expression as she stepped to the side. Suddenly, Rikki popped up with a water gun. "Surprise!" she screamed as she shot the water gun, causing a stream of water to come flying at me. I mentally laughed. Apparently, this girl forgot that I could control water. Just as the water was about to touch me, I held up my hand. The water came to a halt in the air as I started to form a sphere.

"Really? Is that the best you can do?" I laughed as I threw the sphere of water straight at Rikki. Before she could react, the water splattered all over her clothes.

"Aww man!" she yelled as she flopped on the floor.

"The tables have turned," I said in a deep voice, then three girls bursted out in laughter. Rikki then dried herself off and walked up to me.

"I didn't know you had it in you!" she laughed.

"You two are just lucky that my family's not home!" Emma said.

"Yeah, yeah," Rikki and I said at the same time.

"Okay, now that we've had our fun, let's start getting ready for the moon," Cleo smiled.

We all nodded. Just then Lewis walked through the door. He had duct tape and all sorts of other stuff in a bag. They were probably going to help moon proof the house. "Yo Lewis!" I said. "You here to help too?"

"You didn't think I would miss out in this did you?" he smirked.

"I guess not," I smiled. After that, we all started to moon proof the house. I told the girls what to do since this was their first full moon. We had put trash bags over the windows, turned off the water valves, and before long we were ready to sleep the night in. I suddenly remembered what I was going to tell the girls. "Hey girls," I said.

"Yeah?" they replied.

"You aren't going to believe this, but I think there is another mermaid about."

All of their jaws dropped. "Why? What happened?" Rikki asked.

"Well, I was at the moon pool when I saw a red blur come in. It immediately swam away when it noticed I was there. I chased it down and I realized that it had a red mermaid tail. The only things I could see were blonde hair and..." I paused for a moment. "Green eyes. Before I could catch her, she sped away and I lost track of her."

"It seems like we are going to have to look out for this new mermaid," Emma said.

The girls and Lewis nodded.

"Heads up guys, the full moon will be out in five minutes," Lewis said.

"Okay, thanks Lewis," I said as I went into the kitchen. "I brought snacks, anyone want some?"

"Me!" I heard everyone scream at the same time. As I prepared the snacks, Rikki came up to me.

"So, about the new mermaid," she began.

"Yeah?" I asked.

"You like her don't you?" Rikki smirked.

My mind screamed yes, but I wasn't going to let Rikki know that. "C'mon Rikki, I don't even know the girl!" I laughed.

"Will, I know when you're hiding something. I know you too well. I'm like another sister to you, so don't you lie to me."

It was true; Rikki was like another sister to me. I sort of had this urge to protect her ever since we had the little argument at the moon pool. Since then, we've grown closer, we constantly make fun of each other and always are competitive and even made up our own secret handshake. It's so impossible to the others, do they don't even attempt to try it. So in a way, Rikki was like another sister. I sighed. "Okay, maybe a little," I admitted.

"I knew it! Rikki said as she did a little victory dance. After she had her fun, Rikki and I brought the snacks back to the gang. We then started to surf though the TV channels. We found a comedy movie and started to watch it. Suddenly, one of the trash bags covering the windows fell leaving the girls exposed to the full moon. I remembered that I had sunglasses with me, but before I could give them to the girls, Emma accidentally looked at window.

"Emma, no!" I said. But it was too late. She now had that moonstruck glint in her eyes.

Cleo tried to get Emma to look away from the moon, but ended up getting moonstruck herself.

"Mako is calling us," Cleo and Emma said in ghost-like voices.

"Guys, snap out of it!" I said. It was no use. I couldn't break the moon's hold over them.

Rikki glanced at me. "What now?" she asked.

"We have to try and keep them in the house," Lewis said.

"I think it's a little too late for that," Rikki said as the front door slammed shut. Cleo and Emma were nowhere to be seen.

"Rikki, put on these glasses," I said as I tossed them to her. "Stay here. I'm going to get the girls."

"I'm coming with you," she said.

"No Rikki. We don't need three moonstruck mermaids. She sighed and knew I was right. "Lewis, watch her," I said as I opened the front door. He gave me a salute and with that I walked out of Emma's house to find her and Cleo. I dove into the water and sped towards Mako. Once I got there, I only expected to see two mermaids, but instead I saw... three?" Recognition was painted on my face when I realized that the third mermaid was the same one that I had seen earlier. She seemed to be moonstruck too. The moon pool started to go haywire as all three mermaids used their powers on it. It looked like the new mermaid had the power to freeze water, like Emma. Before things could get out hand, I used my powers against the three mermaids to stop the moon pool's crazy behavior. The mermaids noticed this and overpowered me, with their now enhanced powers. They started to throw me against the cave wall. Before I could control it, my wind power grabbed ahold of the mystery mermaid, which threw her against the wall with me. I saw Cleo and Emma smirk at each other and leave the cave. Then everything went black.

Who was the mystery mermaid? Stay tuned to find out! The next chapter will be up tomorrow!

MysticalMerman