Now, Shinhwa has to deal with a new enemy, which also happens to be one of Dongwan's cousins. The evil one at least.

"So, how to we get the Aquarian level?" (Eric)

"I'm afraid it's not that simple. You have to master the power of the Ocean of Mystery." (Mister Magia)

"Isn't there another way?" (Dongwan)

"There is one way but a great deal of magic is required." (Spirit)

"We'll do anything to save the magic dimension." (Eric)

"Then, here's what you need to do. You must collect all six ocean gems from all of your kingdoms." (Spirit)

"But... Pyros..." (Andy)

"There are underwater gates in each ocean. You can enter Pyros' ocean that way." (Spirit)

"Then I guess we know what our next mission is." (Hyesung)

Dongwan was the first to get his ocean gem. Finding it was the easy part. Getting it back was the hard part. Trident's ocean guardian is still under the Darkness Trio's spell. But he was able to get through it and restore it's mind. Minwoo was next to find his ocean gem. There were underwater flowers in Gaia's ocean and the gem was burried under the underwater field. Next was Junjin. The gem was in the middle of a whirlpool but he managed to get it. Then it was Eric's turn. His gem was in the middle of a coral reef but was shining due to the light from the surface. Andy was next and Tempest's ocean was stormy as it's kingdom's bad weather. Hyesung went through Trident's underwater gate to get to Pyros' ocean. Good thing the ocean wasn't frozen completely. He found the gem as well of as a purple flame to restore his kingdom.

"Now that all the ocean gems of here, it's time to preform the Aquarian spell." (Spirit)

The spirit chanted the spell and Shinhwa got their Aquarian forms. As soon as they transformed, they were transported to the Ocean of Mystery.

"Is this...?" (Junjin)

"It is. The Ocean of Mystery. Now, with each of your forms, you can perform a special spell based on your element." (Spirit)

"A special spell?" (Minwoo)

"Yes. And each ocean gem contains an ocean sprite. After using your special spells, they will grant you a wish." Then, the spirit disappears.

Eric can see that Hyesung is worried. "Is everything okay?"

"Oh... Not really. Since the level is cursed..." (Hyesung)

"You're worried that we'll end up like Chilhyun?" (Eric)

Hyesung nodded.

"Don't worry. I'll make sure it doesn't happen." (Eric)

"Thanks, Eric." (Hyesung)

Meanwhile, Cetus and the Darkness Trio are also looking who to access the Aquarian level. They managed to capture Chilhyun and threatened him to tell everything.

"Please... Don't... The level's cursed..." (Chilhyun)

"And that's why we need it! TELL ME NOW!" (Cetus)

"You will never rule... NEVER!" (Chilhyun)

Despite his warnings, they didn't listen and opened a gate to the Ocean of Mystery.

"Oh no... Hyesung..." (Chilhyun)

After Shinhwa got back from the Ocean of Mystery, they went to bed early. 

"Hyesung..."

"Chilhyun? What happend?"

"Cetus captured me. He threatened me to tell him how to access Aquaria."

"Oh no."

"Please... Stop him from ruling the Ocean of Mystery."

"Chilhyun!" (Hyesung)

"Another dream?" Eric and the others came into his room.

"Yes. Cetus has entered the Ocean of Mystery." (Hyesung)

"What?!" (Dongwan)

"We have to stop him from ruling the ocean and destroying the magic dimension." (Hyesung)

They went to the Ocean of Mystery and saw Cetus and the Darkness Trio.

"It's them." (Minwoo)

(And that means Cetus.) Dongwan says in his mind.

"Look!" (Flint)

"How did they get here?!" (Icarus)

"And what's with those forms?" (Eve)

"Hey! What are you doing here?!" (Eric)

"Can't you see? I'm trying to rule the Ocean of Mystery." (Cetus)

"And we won't let you do that, "cousin". Swirling Waves!" (Dongwan)

"Cresent Shot!" (Eric)

"Lighting Shock!" (Andy)

"Whirling Tornado!" (Junjin)

"Flower Fall!" (Minwoo)

"Sparking Ignis!" (Hyesung)

"Ow! They're stronger than ever." (Icarus)

"Looks like they want a war. Well then, it's a war that they will get! You'll see, Shinhwa! One day, we will win!" Cetus and the Darkness Trio swim away for Shinhwa.

"Looks like Cetus doesn't believe in the curse of Aquaria." (Spirit)

"Then, what should we do about it?" (Minwoo)

"Yeah. I know him. He's too hard to convince for something." (Dongwan)

"The only thing to do is to use your special spells." (Spirit)

"But what are they?" (Andy)

"You'll find out." (Spirit)

"Well that was helpful." Eric says sarcastically. Then he sees Hyesung with anothe worried face. "You okay?"

"I can't stop thinking about Chilhyun. You saw that ghostly figure with Cetus?" (Hyesung)

"Yeah..." 

"That's Chilhyun." (Hyesung)

"What?!"

"They must have used him to enter the Ocean of Mystery." (Dongwan)

"Could be." (Hyesung)

"Now what?" (Junjin)

"I guess the battle of the oceans begin." (Dongwan) And he was right.