Kara was bringing Diana up to speed on everything she'd missed and Diana was happy to learn about Powergirl and vowed to help her and Clark track down this Superboy clone and free him, though it did make her a bit jealous, since while Kara had found another sister, she'd still lost all of hers.

However, they were distracted from their conversation when suddenly the Island began to shake.

"What's going on?" Diana asked as they both tried to keep their balance.

"I don't know. Kelex." Kara said, summoning the Island's caretaker robot.

"How can I assist you, Mistress Kara?" the robot asked her in a female voice as it descended as the Island shook again.

"What's going on? Is an earthquake causing this?" Kara asked.

"Negative. External scans reveal that an unknown enemy has somehow located the Island and is attacking its supports, attempting to sink it." Kelex said.

"Impossible, there's no way human technology could penetrate the Island's cloaking field." Kara said as she rushed over to the computers and pulled up the sonar scans.

"It's true, what looks like an entire navy of underwater ships are trying to sink the Island. I don't know how they bypassed security." Supergirl said.

"They swam under it." Diana said.

"What?" Kara asked.

"Can your scanners get us an actual visual on the attackers?" Diana asked, since she had her suspicions about this attack, but she'd need proof to believe it.

"Kelex." Kara said.

"Right away lady Kara." Kelex said as the screen began to show images of strange battleships, unlike anything Kara had ever seen before and way beyond any technology Earth could create, even her company.

"I knew it. Atlantis." Diana said.

"Wait, Atlantis is real?" Kara asked as the Island shook again.

"Yes. And it was a major rival of Themyscira, since they worship Poseidon while my people worship Zeus. Long story, but the gist of it is that we didn't like each other, but like Themyscira, Atlantis avoids all contact with the surface. They prefer to dwell in the shroud of myth and legend. Especially since from what I've heard, they detest the surface world." Diana said.

"So then why are they attacking my island?" Kara asked.

"I don't know, but I have a feeling that this can only mean one thing. They're preparing to declare war on the surface world and likely want to take you out as a show of strength." Diana said.

"Well then, I guess we'll have to stop that. Kelex, send a signal to Green Lantern and Martian Manhunter, have them join us here immediately. In the meantime, let's go meet our attackers." Kara said.

"With pleasure. I've always wanted to bash some Atlantean skulls." Diana said, glad they were both still suited up as they flew out of the island to see what looked like a troop carrier coming to the surface.

"They are not taking my island." Supergirl said.

"No they are not. They may have numbers, but they don't have the strength to defeat a Kryptonian and an Amazon." Wonder Woman agreed.

"We'll see about that!" a voice shouted and they looked down to see a man in blue and purple armor wearing some kind of silver helmet and holding a silver trident who appeared to be the leader.

"Who are you?" Supergirl demanded as she flew down and began to plow through the troops.

"I am King Orm of Atlantis, but you may address me as Ocean Master." the man said as Diana landed in front of him.

"Why come out of hiding now? Why wage a war against the surface when they've done nothing to wrong you?" Wonder Woman demanded.

"Nothing to wrong me? The Surface world has been poisoning my world for over a century. They reap what they sew and the fall of this stronghold will be my first victory." Ocean Master proclaimed, only to be punched in the face by Wonder Woman.

"You may be Atlantean, but in case you cannot tell, I am an Amazon. Your people never could match mine." Wonder Woman said.

"We'll see about that." Ocean Master said he fired an energy blast from his trident, only for Wonder Woman to block it with her shield.

"It's not going to be that easy." Wonder Woman said as she charged at him.

While Wonder Woman fought the leader, Supergirl was busy dealing with his troops and neutralizing his warships, since she could tell that the Island's defenses would not be able to hold out much longer.

Luckily, she wasn't alone, since Superdog had joined the fight not long after it had begun. In fact, he seemed to have made it a game on how many ships he could take down.

But Supergirl's attention was drawn when she heard an injured squeal coming from her dog and turned to see that Ocean Master had just blasted him and gotten a lucky shot in. Thankfully, it had only been in the leg and the sun was already healing him, but Supergirl was now seeing red as she flew straight at Ocean Master at her top speed and slammed right into him.

"No one hurts my dog!" She shouted at him as she punched his helmet right off his face.

"Your attachment to that mutt makes you weak." Ocean Master said, even though he was stunned by the rage Supergirl was showing, since none of his studying of her had shown that kind of rage before.

"Surrender now." Supergirl said, her eyes glowing red with power.

"Never." Orm insisted, since he refused to admit defeat.

"Release our king now!" a brave soldier said as Supergirl looked up to see that she was surrounded.

"Fine. But this isn't over." Supergirl said.

"Oh I think it is." Orm said, right as a bright green light came out of nowhere, blasting his ships to pieces as Green Lantern and Martian Manhunter appeared.

"Sorry we're late. This guy being stubborn?" Green Lantern asked with a smirk.

"Stand down, Ocean Master. This is your only warning." Supergirl told him.

"I will never bow to any of you surface warriors." Orm said, since while he hadn't accomplished his mission, he could see by the smoke coming from Supergirl's island that enough damage had been done to send a message.

"This is your chance for peace with the surface. I suggest you take it." Wonder Woman insisted, even though she knew what Orm would choose.

"No. War is coming. We may not have sunk your Island, but your cities will not be so lucky." Orm said as he triggered an explosion to cover his and his troops escape.

"That's not good." Wonder Woman said.

"No it is not." A new voice said and Supergirl was surprised when she saw Dr. Fate hovering in the air.

"Doctor Fate." Supergirl said in shock.

"Supergirl, Wonder Woman, Martian Manhunter, Green Lantern. This crisis threatens the balance of this world. You are needed to help prevent it." Doctor Fate said as all of them vanished a flash of gold light.

To be continued in a new story, the Justice League Chronicles Book 1; the Atlantis Wars.

Ocean Master is played by Tom Hiddleton and with that clue, I'll give you one guess who's going to play Aquaman.

And finally, I know some of you may have mixed feelings about this, but I've decided to write Felicity out of this series, since she's quickly become a forgotten character anyways in this series, even my plans to pair her with Alex could not keep her relevant. I don't plan on killing her off, but she's just not needed anymore. I hope you understand and I'm open to suggestions on how to write her off.