The doors that were closed due to the time being, they have open once more. Now it's time for the gang to move forward onto the unknown. The little mermaid and her companions said their goodbyes to the gentle manta rays after they aided them onward to the opened temple doors. The manta rays wished them the best of luck with their journey and now the group swam into the large doorway.

On the inside ruins, there happens to be ancient murals on the walls. It seems that the murals is telling them a story. An ancient history of the lost civilization that came to the earth's waters before the time.

After the age of the dinosaurs and the apex creatures, there came a extraterrestrial race of aliens called the "Nai'Viqians". Just like the dawn of man, the Nai'Viqians lived on land long after the extinction of the dinosaurs. As time goes on, they adapted to the new way of survival. They fought off against the predators, hunt for food to feed their young, tested the males for leadership and over the years, they build their civilization hidden underneath the deep blue seas. They hid their growing empire from the humans for centuries.

Now they all live a simple way of life as long as they follow their laws, traditions and also worship their mechanical gods every day. The Nai'Viqians had lived an idyllic life amongst the deepest ocean, until the golden days are slowly coming to an end. The higher republicans are in a mighty conflict with the industrial shareholders over the poor use of the rare technology for the colony. They brought it up to the alpha rulers about the continuous misuse of their technology that was meant for protecting their civilization. But instead, the mystical government wants to use it to wage wars with the other civilizations. They're bent on wiping out humanity on land. And if the other species that were to be discovered, they'll attack them as well. The alpha rulers don't take too kindly of the bad news. So they've turn to their god, praying for the safety of the people and the other ones outside of their race. Their god happens to appear in the form of a colossal mechanical upside down triangle, made of bodily masses of flesh and biological technology, along with a glowing red eye in the middle of its center. And it can be found in its temple that is also the shape of an upside down triangle. The Nai'Viqians thought that their god will protect them, but they were wrong. The god is malfunctioning on its own and it is now endangering the colony despite of the political crisis. Not only that, rumors has it that the mechanical god is using living breathing sea mammals and also sixty six percent of the population for its main function. When the alpha rulers tries to put an stop to the Ragnarok but to no avail. The god's wrath inevitably destroyed the entire civilization, wiping out all traces of the Nai'Viqians's existence. It was a devastating loss of life during that time. But luckily, only a small group of surviving Nai'Viqians was able to live through the Ragnarok.

From time to time, they gathered the remaining pieces of the biological technology left behind in the isolated colony and they use the same pieces of to rebuild what was lost to them. That's where they created bionical humanoids made of the same technology, to carry out the lost civilization. Their sole purpose remains unknown.

After learning of the devastating history, Ariel and her companions were stunned of the story behind the murals.

"Wow! I have no idea what it is like to live in such dystopian society." uttered Ariel in a soft tone. "It is so sad, and so terrible. They lived for so long, only to endure an horrific outcome."

"I'm just glad we weren't in their fins when that happened." said Flounder.

"I'm amazed dat we are learning about 'tis to begin with." said Sebastian.

Abzû swam closer to the group.

"Come on, everyone." says Abzû, urging them to follow him. "We have to press onward."

"You're right." Ariel responded. "We gotta help you find your answers."

So the little mermaid and her companions swam onward through the aquatic ruins. Along the way, they carefully navigate through the swarm of jellyfish, avoiding the painful stingers. Although the jellyfish are beautiful because of their transparency and a glowing hint of blue on them. The gang follow the two small robots through a short cave, leading them to the outside. One small robot swam ahead of them and it's going too fast.

"Hey! Wait up!" Abzû called out to it.

As the one small robot exits out from the cave, then all of a sudden, Duncan the shark sprung out of nowhere and ate the robot. Abzû, Ariel, Flounder and Sebastian were caught off guard by the surprisingly nasty encounter for the second time. Then Duncan swims off into the blue again. Luckily, they still have that other small robot by their side. Although paranoid of the shark's habits for showing up in the unexpected times, they must press on if they are to help Abzû find himself. So they continue to swim out to the wide blue waters.

They decided to swim downward and the light slowly fades for a brief moment, until they reach the ocean floor underneath the rocky pillars. From there, Abzû frees the leatherback sea turtles from their prison. They all thanked him for it. Ariel was touched by the act of kindness Abzû has done. As for their appreciation, the leatherback sea turtles offers to let them ride on their smooth leathery backs. So they hitch a ride onto the turtles and they took them on a long mile away to their destination. They head over the ravine below them, passing through the rock formations. After a long minute of their ride, they arrive at the foot of their destination. The gang turn to the leatherback sea turtles, thanking them for the ride.

"Thank you so much." thanked Ariel, petting the blushing leatherback sea turtle.

"We will carry on from here." said Abzû.

"Ok then. We will leave ya guys to it." said one of the leatherback sea turtles.

"Have a safe trip to your destination!" said the alpha leatherback sea turtle, leading the others away.

The leatherback sea turtles swam out into the blue. Now the gang have to swim halfway through the oceanic canyons. The aquatic gang ascends upwards to the light, only to find a strange upside down triangle architecture on the upper reefs. As they got closer, it turns out to be a doorway opening by activation upon approach. Then Ariel, Abzû and their friends enters the door.

The triangular door abruptly shuts closed behind them once they've make it to the other side. Then they all came across the strong currents at the end of the path. Both Flounder and Sebastian were too afraid to go inside the currents but Ariel and Abzû decided to jump in since the other marine creatures are doing it. Despite of their detest, Flounder and Sebastian went along with it as does the tiny robot. Then the gang jump inside the currents.

There a lot of fishes swimming along with the strong currents. The little mermaid and her companions swam along with the fishes. The currents took them over the hedges, into the open gaps, through the the crystal caverns and now they are in the great barrier bay where the currents met its end.

While they're swimming by the reefs, a pod of common dolphins came soaring right by them. The pod of dolphins wanted the group to play with them. Since they have a time to spare, the little mermaid and the gang decided to play with the dolphins for a bit. During their playtime, Abzû took half a few minutes to free the pufferfishes from the platform prison. Then he went back into playtime. Five dolphins swam with Ariel, soaring through the reefs. Flounder hitched a ride with the littlest dolphins. Sebastian was already riding the small robot in order to catch up with the pod. With the strong swish of the tails, Ariel and the dolphins leaps on top of the surface. Abzû joins them on the leaping spree. It was so much fun. Seeing how happy Ariel and the dolphins are, makes Abzû begin to wonder about his true purpose of being here in the sea. Was he meant to help bring devastation to the earth's oceans, recreating another ragnarok like the time before, or is he meant to help them restore the essence of all the oceans? These answers still remains unknown.

During the time, another rare creature is swimming by the great barrier bay. This time, it is a masculine male creature with ravenous black hair, teal fishy eyes, his entire muscular body is covered with red scales, large dorsal fins on his back and his long black fishtail, same with the gun-like metallic texture shimmering along with the rainbow sheen reflection. It was a mutant merman named Travannus. When he is passing through the reefs, he immediately notices a mermaid playing with a pod of dolphins. From the long ombré red dreadlocks, he recognize her from below. It turns out that he knows her.

"Hey! Yo Ariel!" he shouts out to his friend. "Down here! Below you!"

Ariel stops playing with the dolphins for a split second to notice a muscled monster figure calling out to her. She is happy to know that Travannus has came by.

"Oh hello, Travannus!" greeted Ariel from above. "It's so good to see you!"

Travannus swam up to his fiery dreadlocked friend.

"Likewise, princess." said Travannus as he hugs the little mermaid. "So what are you doing out here in the great barrier bay?"

"Oh I'm just seeking the thrill of adventure." says Ariel in a cheery manner. "You know it doesn't hurt to go out and explore every now and then."

"Yeah. Knowing you." chuckled Travannus in amusement. "Always the adventurous kind of person."

This just in, Flounder and Sebastian swam up to the two merfolk. Travannus noticed them as well.

"Well hey, you two." greeted Travannus. "How you doing?"

"Hey, Travannus." says Flounder. "I didn't know you came by. I'm doing great myself."

"That's cool! It's good to see you too, Flounder." says Travannus as he pets the yellow and blue fish.

Then he turns to Sebastian.

"Hey, Sebastian! What's good?" Travannus says as he picks the crab up in his webbed hand.

"Good day to you too, Travannus." says Sebastian. "It is good to know that you stopped by. As for me, I'm just happy to be alive. That's all."

"I can see that." said Travannus as he then turns to Ariel. "So what brings you to the great barrier bay, Ariel?"

"Oh I was just helping out a new friend who I've met in the kelp forest." said Ariel.

"A new friend, huh?" said Travannus, scratching his chin. "So who is this new friend you've met? When can I meet em?"

"He is right over there." says Ariel as she points out to Abzû below them

Travannus is slightly bewildered by the fact that Abzû looks like a humanoid with two legs but instead of feet, he has long flippers. Like a translucent fish. The little mermaid took her mutant friend to introduce Abzû to him.

"Travannus. This is my new friend, Abzû." Ariel introduced the two. "And Abzû. This is my friend, Travannus. He is a merman, but a different one. He's really friendly."

"Hello, Travannus." greeted Abzû with a handshake.

"Umm hello, Abzû." greeted Travannus, although bewildered. "I'm guessing you're not from around here. Am I right?"

"No, not exactly." says Abzû. "To be honest, I don't even know how I got here nor do I know what I am. Forgive me if this sounds weird, but that's all I can say."

Travannus is a bit puzzled by Abzû's mannerisms. To the merman, he sure seems like a strange guy. It is rather complicated for someone like Abzû to not know a thing about himself. Luckily, Ariel filled Travannus in with the information. She told him that she, Flounder and Sebastian were helping Abzû find the answers he is desperately searching for. Not only that, they made a truly remarkable discovery of the twilight realm hidden in the ocean floor. After hearing the little mermaid's side of the story, Travannus became intrigued by this. Then suddenly, it is not long before he decides to join the group on their extraordinary journey.

"This sounds fascinating." said Travannus with a smirk. "Well count me in."

"Are you coming with us too, Travannus?" exclaimed Ariel.

"Sure! Why not!?" said Travannus, winking at her. "Besides, you're all not having any fun adventures without me. So I'm coming too."

This makes everyone happy to know that Travannus is joining them. Now Abzû has made another friend. Then the gang continues onward onto their journey. Abzû fixes his robot companion and it is good as new. Travannus is amazed by the strange tiny machine. Abzû explains to him about the technical modifications he learned while fixing small robots and freeing sea creatures from the platforms. Now the mutant merman is even more intrigued as the gang carries onward, soaring through the crystal clear water.

Once again, the coral is blocking their advance. Luckily for them, their robot companion has cleared the way for them to enter the opening gap. What follows next is another current. It is coming from the caves below. So they all join the fishes on a wild ride. Along the way, six orcas have joined them for the ride. They each rode on every orcas' backs. As the currents carries them through the majestic reefs along the way. The orcas prepared to make a big jump when they are at the end of the current. Ariel, Abzû and all of their friends prepare for it as well. When they've finally reach the end of the ride, the orca whales darts towards the surface at high speeds. The little mermaid and her companions hold onto the orcas' dorsal fins. And with the moment is right, the orcas, along with aquatic group, leaped right out of the ocean's surface and into the waters again.

Then the orcas disappear out of the blue. But none of that matters to the heroes now.

"Oh isn't this fun!?" exclaimed Ariel with excitement.

"Whew! It sure is, Ariel!" says Flounder, out of breath.

"I've never felt like this before." says Abzû with glee. "What a rush!"

"Yeah! I can still jump higher than any creature as usual!" Travannus boasted.

"Okay, okay! You proved your point, mon!" said Sebastian, a tad annoyed with Travannus. "Stop rubbing dat in!"

As the continued their quest, Ariel notice that the sea is getting a little dark.

"Umm is it just me or did it get so dark all of a sudden?" Ariel wondered.

"You're not the only one, red." said Travannus as he too noticed the darker waters. "It is getting dark as we keep swimming on."

"I can turn my light on if you guys want me to." suggested Abzû as he flashes his lights from his forehead.

"Wait! You can make lights from your head?" Travannus asked Abzû.

"Yes, that's right." Abzû answered the mutant merman. "I guess whatever I am, I'm equipped with my own lights. Now stay close to me, everyone."

"You don't have to tell me that, mon!" said Sebastian as he grabs hold onto Travannus's dorsal fins. "I'm already clinging on with my life."

The monster merman rolls his eyes in a slight annoyance. Thus the gang navigates in the darkest sea. The small robot detects a lone pillar nearby. It is the same one from before, with the blue light from its peak. The gang swam closer to the top of the pillar. Once they are by the foot of the portal underneath them, they know what they have to do. With Travannus by their side, they all had enter the portal. It lead them to another twilight realm of the gods. Travannus swam downward to touch the realm's water.

"It looks like we're floating above the sea." Travannus uttered in pure shock.

With his touch, the water begins glowing again. This time, the luminescent light is leading them to the coral shrine. They followed the glowing path towards the coral shrine up ahead. Once upon entering the shrine, they found a lone bubble once again in the middle of the room. After what happened the last time, Ariel turns to Abzû and Travannus.

"Are you guys ready?" asked Ariel.

"I'm ready as I'll ever be." said Abzû as he summons his courage.

"Umm, I really hate to come off as the dumb guy, but what is really going on here?" Travannus asked the two.

Ariel takes Travannus's hand, bribing him to come closer to the bubble.

"You'll see." says Ariel as she puts Travannus's hand on the bubble with her own. "It will all make sense in the end. Trust me."

Then Abzû too put his hand on the bubble. Flounder and Sebastian took precautions at this time as they hid into Ariel's locs. With no time to lose, the three unlikely companions touched the bubble together. Abzû's body glows into a bluish light again and his essence fused with the bubble. With the shrine rumbling the second time, they all brace themselves. The bubble starts to glow brighter than the sun. From the same light, out came the orca whales, ascending upward to the ocean world. Thus, their natural habitat is now fully restored. That's when Ariel realize that there's going to be more of the pillars to find along the incredible journey. The more pillars they can find, the more restoration they bring to the earth's oceans. Travannus is at awe of the discovery. He cannot believe his own eyes. The orcas swim pass by them. Ariel and her friends recognize the orca whale with the white spot on its tail fin. It is Spot the whale, the one Ariel took care of a year ago. Now he is all grown up. Spot waves at them, thanking the heroes for restoring their habitat. This reunion is enough to make Ariel, Flounder and Sebastian a bit misty eyed. Travannus pats Ariel's shoulder, letting her know that he understand how she is feeling right now. Abzû turns to the group.

"So shall we get going?" he asked them.

Ariel nods her head slightly, although she is still teary-eyed from the encounter.

"Yes, we should." Ariel replied. "I guess there's still much more to do. We still have to help you find some answers about yourself."

"Yes but first, I want to thank all of you from coming with me on this quest." says Abzû, feeling overwhelmingly blessed as well. "It really means a lot to me."

"No problem, buddy." said Travannus, comforting Abzû like a man. "It's what we do. We help each other out. If there's a way, we will find it. No matter what."

"Yeah, it's what friends are for, Abzû." said Flounder, being sincere.

"If you go down, we all go down together, mon." said Sebastian.

Ariel smiles for she is happy to have such great friends to help each other through the darkest of times. And now they're doing the same for Abzû. The little mermaid holds onto his hand as a sign of compassion.

"We are here for you, Abzû." said Ariel with a warm smile. "Nothing is ever going to change our friendship with you."

"Thanks, Ariel." says Abzû as he turns to the others as well. "Thank you, everyone."

They all acknowledge him with their generosity. Then they all turn to face the opening doors from afar. He turns to the red locked mermaid one more time.

"Well lets get going." says Abzû as he swims ahead.

"Come on, you guys." says Ariel as she then swim along with Abzû.

"Coming, Ariel." Flounder complied, tagging after them.

"Don't forget about me here!" shouted Sebastian, gripping onto Flounder's fin.

"Right behind y'all!" Travannus complied as he was the last to swim alongside with the tiny robot.

So the little mermaid and the gang swam towards the large doorway. For the sake of helping Abzû find some answers of his past, they prepare for the unknown as they were about to enter the doors. Whatever may comes their way, good or bad, they will screw their courage to the sticking place. And they will not stop until get the answers they seek, unravel the big mysteries and restore the oceans' natural habitats. So the rest of their journey is yet to be seen and to be continued.