The timeline is completely mixed up. Addison never left. Derek is currently dating Rose. Mark is dating Lexie. Most of the characters from grey's anatomy are probably going to show up at some point. Other than that Dereks family is going to play a big part.
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Three identical girls went through the doors of Seattle Grace Hospital. They had long dark brown hair, one in a high ponytail, one in a loose ponytail and the last ones hair was just loose. They had glittering blue green eyes, and long dark eyelashes. One of the girls was wearing a miniskirt and a black tank top. The two others were wearing jeans, they were also wearing black tank tops. They went to the elevator and without saying a world one of the pressed the button to the surgical floor. Just as the elevator doors was about to close one phone started ringing and a woman stepped in to the elevator.
"It's mom." The girl in the middle said, the girl to her left took the phone.
"Emilia Michelle Shepherd Miller on Abigail Sophia Shepherd Millers phone." She said in a breath and both the other girls started giggling.
"Hey Emily" Her mother signed, and Emily was sure she just had rolled her eyes.
"Hey, stop rolling your eyes. You were the one who gave us these names."
"Well to be fair you have a dad, and last time I met you you all liked your names." Said the woman who had stepped in to the elevator as the doors opened on the right floor. All three girls turned around.
"Addison" They all said.
"Addison?" The voice in the phone asked. As they went out of the elevator Emily continued to talk to their mother. Abby was talking to Addison, but it didn't take long before the all looked up at the third girl. She had made a wired sound. As Addison, Emily and Abby looked up she was running to a man standing at the nurse station. Emily rolled her eyes looking at the man who was standing there with a woman. She knew him, and guessed he was trying to get her in bed. She was just about to say so when Addison smirked.
"That's his girlfriend, I wonder how she going to react to this."
"What's going on?" Emily heard her mother ask.
"Oh it's just Marry, she found Mark. I'll call you later. Bye." She hung up just in time to see Mark turn around just in time to catch her sister. She was 19 and almost as tall as him and still he lifted her up. Emily smiled, she knew her sister loved Mark than she was willing to admit, and that she was heartbroken when he had left.
Lexie Grey looked confuted at the girl in Mark arms, and then she looked at the group of people coming to them.
"Marry" One of the girls said "You're not the only one that want to say hello." Mark let go of the girl and hugged the two other girls to. Lexie looked at the three identical girls, wondering how they knew Mark.
"Lexie" Addison said "This is Marlena Tracy Shepherd Miller, Emilia Michelle Shepherd Miller and Abigail Shepherd Miller." Addison said as she pointed to each of the girls. "They are Dereks nieces. Girls this is Lexie Grey, Marks girlfriend" All three of them eyed her and then they looked at Mark.
"You're actually capable of having a girlfriend? Emily asked mockingly.
"You sound like you mother." Mark answered. That made all the girls and Addison laugh.
"Well she not as bad as Hayley." Abby said.
"No, Hayley is getting more and more like Aunt Nancy. It's scary" Marry said. That made both Addison and Mark laugh, and at the same time have them looked a little nervous.
"The world doesn't need another Nancy Shepherd" Mark said, and the girl nodded in agreement.
"What about my sister?" Derek asked, he and Rose had just walk up to the nurse station. And he had only heard Mark commentary. He was wondering who the three girls who was talking to Lexie, Addison and Mark were when they turned around.
"It's nothing about you sister Uncle Derek." The fist one said.
"No we were talking about Hayley" The second on said.
"You might remember her, Hayley Melissa Shepherd White." The tired on continued.
"I mean, you should remember you family…"
"…Even if you never call." Derek gulped, in front of him stood his three oldest nieces. Both Addison and Mark had problems trying not to smile or laugh. They could hear that this was a message from his four sisters.
"How mad are they?" He asked.
"I don't think they really are mad, I just think they miss their brother." Abby said. She eyed Rose skeptically, but didn't say anything. If she wanted answers it would be better to ask Mark and Addison. It seemed that her sisters had gotten the same feeling she had. It was obviously something going on between their uncle and this woman, and neither had a good feeling about her. Emily smiled, her evil smiled, and both her sisters baked off.
"So Uncle Derek, ever since aunt Nancy came home she has been talking about a Meredith Grey. I mean she not totally nice about it, but everyone else think she's overreacting to something." Emily started. Both her sister had to fight really hard to not laugh at the uncomfortable looks in both Dereks and Roses face. "Mom even said she though Nancy totally had misunderstood something, and grandma said she really wanted to meet her. Anyway now that we are here, we really want to meet her." Both her sisters nodded. Both Addison and Mark saw what they were doing, they knew the girls had relisted that their uncle was dating Rose the moment they laid eyes on the couple, and the seemed that the girls, like many others before them, was extremely skeptical to this woman. Lexie looked bake and forth between the sisters and their uncle, wondering how he was planning on getting out of this.
"Well she working at this hospital so might get to see her, but we're not together anymore." Derek answered after awhile. All three girls faced at shocked look, gave their uncle a hug and said they had some things they wanted to discuss with Addison.