Day 1…..Derek pulled up in front of his mother's house in a moving van followed by Addison in the car with Grace. They both stepped out of the vehicles.

"We're home," Derek announced.

"We are," Addison replied happily as they kissed.

"How long before my sisters show up?" Derek asked.

"Three minutes," Addison guessed. She opened the back door of the car and took Grace out. They each grabbed a few bags and entered the house. A second later they heard car doors. "Told you."

"At least we have hands to help us move in," Derek said. They went outside where Nancy and Kathleen's families were there to greet them.

"You're finally back home!" Nancy said excited.

"Get back in the van. Let's move back to the woods." Derek said.

"Derek!" Nancy yelled.

"I'm kidding," Derek said, "but I did get used to my space in Seattle. Since you're all here, we have a moving van to unload."

"Did you bring everything? We haven't moved anything out of mom's house yet," Kathleen told them.

"We didn't bring much furniture besides baby stuff, it's really our stuff, clothes, toys, some kitchen things," Addison informed them. "We're going to need a much bigger truck when we move the rest of the house."

"How long until you go back?" Nancy asked.

"We have a week until we need to be back in Seattle. Derek's doing four days here three days there for a month. Grace and I are doing every other week for two months and then we're all here full-time," Addison explained.

"We are so excited to have you back," Nancy said.

"We know," Addison and Derek replied in unison.

Day 2…Addison was feeding Grace breakfast. Derek came in the kitchen and opened some cabinets.

"Do you know where a to go cup is?" Derek asked. Addison opened a cabinet and pulled one out for him.

"We have so many boxes to unpack," Addison commented.

"And maybe some rearranging," Derek added. He poured coffee into the cup. "I have to go. I'll see you tonight." He kissed her and walked towards the door as Nancy walked in. "Day 2 of unannounced guests."

"Good morning to you too," Nancy said.

"Goodbye," Derek said as he walked out the door.

"Since you're here, grab a box and unpack it," Addison said.

"I'm actually here for a different reason," Nancy said.

"What's that?" Addison asked.

"How would you like to work with me?" Nancy asked.

"You know I want some time to stay home with Grace, maybe in a few months," Addison said.

"We had someone quit unexpectedly. We need someone now. Even if you just did mornings or afternoons or a few days a week," Nancy said. "We have too many patients for me and Laura to handle."

"I'm still working in Seattle every other week," Addison said.

"I know. We can work around that," Nancy said. "We really need you like today. We could start taking on higher risk patients with you. You know you're going to miss practicing medicine if you just stay home. You'll still have plenty of time to see Grace."

"Alright I'll do it. Three days a week," Addison said.

"Fine," Nancy said.

"I start in two weeks," Addison argued.

"Okay," Nancy said.

"And I get to bring Grace and a babysitter to work sometimes," Addison said.

"We already have a playroom for our kids," Nancy informed her. "Now that we worked that out, I have half an hour to help with those boxes."

Day 4….Addison was cooking dinner while Grace played on the kitchen floor. Derek came home from work.

"Good evening my girls," Derek said kissing Addison and then Grace on the head.

"What time do you leave?" Addison asked.

"I have to be at the airport in an hour and a half," Derek answered.

"And the crazy bi-coastal two months begin," Addison announced.

"We'll survive and then we will get a lot of family time once we are all here forever," Derek said. Addison set dinner on the table.

"Family dinner before you leave?" Addison asked.

"Of course." Derek replied.

Day 5…Derek walked into Seattle Grace Hospital early in the morning.

"Dr. Shepherd. You're back!," Callie said.

"I am. For a few days," Derek replied.

"Can I get your help with a spine patient?" Callie asked.

"Sure. In a few minutes?" Derek asked.

"Take your time," Callie said. Mark walked up to him.

"How's your first day without your wife?" Mark asked.

"We're going to be lucky to survive the next two months," Derek said.

"It's going that well," Mark said sarcastically.

Day 6…Addison walked through Seattle Grace early in the morning. She walked up behind Derek.

"Hi stranger," She said. Derek turned around smiling.

"What are you two doing here?" He asked taking Grace from her.

"Well, this separate coasts thing isn't going to work for us. We're only six days into our two months and we missed you. I realized I don't have anywhere to be this week so why not be with you. We hopped on a plane and now we're here," Addison explained.

"I'm very happy you're here. I missed you both a lot. I have another surgery and then I'll be home in time for dinner?" Derek said.

"That sounds good to us," Addison replied.

"What are you going to do today?" Derek asked.

"We're going to see Lily," Addison informed him.

"She's going to be so happy," Derek said.

Later Addison rang the doorbell at Mark's house. Izzie opened the door surprised to see Addison and Grace there.

"I thought you were in New York," Izzie said.

"We decided we want to be in Seattle with Derek," Addison explained. Lily came running to the door at the sound of Addison's voice.

"I thought I was never going to see you again!" She exclaimed.

"Here I am," Addison said. She hugged Lily.

Day 7… Addison was still in bed while Derek was getting ready.

"I have to go babe," Derek said.

"Four days. We can do four days right?" Addison asked.

"We've made it through a lot lately, we can do four days," Derek confirmed.

Later Addison walked down the hallway with Callie and Bailey.

"Derek left this morning. I already miss him," Addison rambled.

"Is this all we are going to hear from the two of you until you're gone for good?" Callie asked. "Not that we are trying to get rid of you. We don't want you to leave." They approached the desk and heard Cristina, Meredith, and Alex talking.

"Who are we supposed to page for OB today?" Meredith asked.

"That would be me," Addison walking up behind them.

"Welcome back," Meredith said smiling.

Day 9 …. Addison called Derek and it went right to voicemail.

"I miss you. We didn't talk yesterday. Three weeks ago, we were barely talking, we need to try to make this work for the next 51 days. I miss seeing you at work. I miss working on cases with you. Call me. I love you," Addison said leaving Derek a message.

Day 10…The phone kept ringing in Derek's ear.

"You've reached the voicemail of Addison Montgomery-Shepherd. Please leave a detailed message and I will get back to you as soon as possible," Derek heard.

"Sorry I keep missing your calls. This job is a little more time consuming than I imagined. I'm committed to you though. We are going to make this work. Amelia and I fought at work today. I'm not sure how that is going to go. She needs to realize I'm her boss. Nancy's cooking me dinner tonight. Call me back. I'll answer as long as I'm not in surgery. I love you," Derek told Addison through her voicemail.

Addison tried calling Derek back a little later, but got his voicemail.

"Hey. So apparently the communication in our marriage these days is through voicemail. That could work, right? We're three hours later than you so we will still be up for a while and we can't wait to see you tomorrow. Call us. Love you," Addison said leaving a quick message on her way to get Grace from daycare.

Day 11… Derek walked through the hospital with his bags. He passed Callie in the hallway.

"How's New York?" Callie asked.

"Great. Have you seen Addison?" Derek asked.

"Not lately," Callie replied as Derek walked away. He continued walking the halls.

"Addison?" Derek asked Mark.

"What? No hi, how's it going, haven't seen you in a week?" Mark asked.

"I haven't spoken with my wife in four days," Derek said.

"I haven't seen her since this morning," Mark replied. Derek walked away and passed Izzie.

"Are you working with Addie?" Derek asked.

"Yup. She just went to her office," Izzie informed him. Derek practically ran there and greeted Addison with a long kiss.

"I missed you too," Addison said.

"We didn't actually talk in four days," Derek stated.

"I am aware," Addison said.

"We have seven days together now," Derek told her.

"We do?!" Addison asked surprised.

"Yes we do. We all fly back to New York together Sunday and then I'll go back to Seattle on Thursday. That gives us a whole week together," Derek said.

"Are we crazy?" Addison asked.

"I think so." Derek replied.

Day 13… Addison answered the door. Mark, Izzie, Lily, and Nathan were standing there.

"Hey," Lily said walking right past Addison and into the playroom to see Grace.

"You are getting to be such a big boy," Addison said to Nathan, taking him from Izzie. "Come in." Addison closed the door.

"We wanted to spend some time with you guys before you leave for New York again," Izzie said.

"You are welcome to spend the whole day with us," Addison replied smiling. "We're going to miss you when we actually leave," she said looking at Nathan. They all sat down in the playroom and watched the kids play together.

"Did Addison tell you she starts working with Nancy on Monday?" Derek asked.

"No. That is going to be one high strung practice," Mark said.

"I'm hoping it keeps the unexpected visitors down," Derek told him.

"Yeah like that's ever going to happen. You chose to move back there. Into a house that all of your sisters have a key to," Mark added.

"Oh god. I didn't even think of that," Derek said.

"You love it," Addison said. "And it will all die down once it's not new anymore."

"It's good for Grace," Derek said.

Day 14…Addison and Derek were both putting clothes in suitcases.

"Can you believe we are actually travelling in the same direction on the same day?" Addison asked excited.

"We're having a good week," Derek replied.

"We're having a great week," Addison said kissing him.