Arriving at the walls of Atlantis, Areithusa and Areithous, whose small hand was clasped in Arethusa's, were accosted by a group of guards. "Here's a pretty maid and her bastad son," said one, "I wonder if she would mind me bedding her for the night?" Arethusa glared at him. "First off," she said, "Areithous isn't my son - he's my brother. And second, I would mind. In fact, I think I'd castrate you with a dull wooden spoon. And then, I'd kill you." The same guard laughed. "Oh, so the maid is feisty is she? Well boys, I think I'd like to have that in my bed!"

Arethusa growled. "You would shut your mouth if you know what's good for you. If you try anything, my grandfather/uncle will make sure that you go to the Fields of Punishment - and that's after my father and other grandfather/uncle and I kill you." The guard scoffed, laughing. "Oh? And who are these grandfather/uncles and father?" Arethus looked down at him coldly. "The grandfather/uncles are Hades and Zeus, and the father is Poseidon. Now, let us into Atlantis." The guard's eyes narrowed. "No. How dare you claim to be the child, or children might I say of King Poseidon? He only has two children - our Lord Prince Triton and the bastard demigod Perseus Jackson."

Arethusa sneered at the guard. "He has five children: Triton, Perseus Jackson, the cyclops Tyson, my brother Areithous, and I, Arethusa. Let us pass." When the guard again said no, Arethusa punched him in the face, instantly making his nose shatter into hundreds of pieces and knocking him out. The other gards advanced on them. Her hand tightening on Areithous', she knocked half of the other guards out with the hilt of her sword and swam past the rest, Areithous hugging her from behind. She quickly was inside the walls of Atlantis, swimming towards where she knew Poseidon to be as guards chased her, more entering the chase when they knew she was in trouble.

Arethusa quickly ducked behind a pillar and took a short cut - for she had an instinctual knowledge of where everything in Atlanstis was - to Poseidon's palace. When she arrived there, she said, "Father," just as gods accosted her, pulling Areithous off of her and attempting to tie the both of them up. Poseidon swam towards the two as Arethusa flew into a viscous fury, knocking out any guards who dared to come near here and grabbing Areithous, who's eyes were wide, and filled with fear. "Stop!" came the shout from Poseidon. The guards froze. "What are you doing? That is my daughter - Arethusa - and my youngest son - Areithous. Areuthusa is second in line for the throne, if Triton is killed, or if he fades or some such thing. And Areithous is fourth in line for the throne, if something hppens to Triton, Arethusa, or Perseus. Anyone who has so much as touched them will be thrown into my dungeons, and anyone they point out pesonally will be executed."

Areuthsa swam up to Poseidon. "Father," she said, "There was one guard - he is probably floating around outside Atlantis now - that was making lewd comments about me and calling Areithous a bastard. I shattered his nose and knocked him out." Poseidon nodded. "Very well. I believe that I know who you are talking about - I have heard several complaints against him in the past." Areithous spied his father just then, and he shrieked, "DADDY! Daddy!" Arethusa smiled. "I believe that my brother wants to be held by you." Poseidon nodded, smiling as well. "Daughter, I believe you are correct." He picked the small child up. "Hello Areithous. How are you today?"

Areithous smiled and nodded. "Happy! Sissy helped me grow a fish tail, and control water powers! Also, Sissy saved me from giant metal cow." Arethusa shrugged. "It was a bull actually. One of the damaged creations of Hephaestus I suppose." The small family talked for a while more before the Camp Halfblood conch was heard, signallnig that it was time for dinner. "Goodbye Father," said Arethusa, "Bye Daddy!" was heard from Areithous, and "Goodbye Arethusa and Areithous," was how Poseidon bid two of his five children goodbye.

At dinner, the two sat alone, though Areithous was claimed by Poseidon, and generally fawned over by the female population of Camp Half-Blood, though Arethusa was very protective of him. A girl came over and Arethusa looked at her, scowling. The girl had ankle length black hair bound in a braid and golden eyes that had a galaxy look to them. She also had ruby red lips, and was dressed in a black silk tube top, white leather pants with free range movement, gold knee high boots with high heels, and a white leather trench coat with a monagrammed gold cat oulined in black that had multiple hidden pockets.

Reaching out with tendrils of her magic, Areuthusa sensed what powers the girl had:

gem calling

time travel

talking to cats

illusions

clones

lie detection

She then used the tendrils of magic to sense her parentage: Pluto and Bassett. Hmm, interesting. "Hello cousin," she said. The girl nodded. "Hello. I am Onyx, but you and your brother may call me Gem. As you undoubtedly already know, I am the daughter of Pluto and Basset. I am also the legacy of Ra, Saturn, Set, and Loki. I have the powers of gem calling, time travel, talking to cats, illusions, clones, and lie detection." Arethusa raised an elegantly arched eyebrow. "Saturn, as in the Roman god of generation, dissolution, plenty, wealth, agriculture, periodic renewal, and liberation?"

Onyx, or as she had bid Arethusa and her brother to call her, Gem, dipped her head in a nod. "Yes." The two struck up a conversation, Areithous having fallen asleep in his older sister's lap, and it went on until dinner was over, and the camp singalong had started. At that time, Arethusa said goodbye to Onyx - er, Gem - and went to her cabin, where she made a king sized bed with a snap of her fingers, setting Areithous down on it and tucking the child in. She then prayed to Morpheus and Hypnos so that Areithous could have a good sleep, and good dreams as well.