This is my first Grey's Anatomy fanfic so don't be to hard on me!

Summary: Derek wanted space so he left. What happens when he returns? What is Meredith hiding besides their 5 year old son? MerDer .

Chapter 1: Life

Meredith's POV

It's been five years. Five years and I haven't stopped loving him. Thing is; where is he? Has he forgotten me and moved on. No. he just needed his space. What am I doing? I can't keep holding onto the past. I have to move on. Thing I can't. I'm here raising our 5 year old son, Derek James Shepherd Junior. DJ (Derek Junior) was an exact replica of his father. Anyone who knew Derek would know that that's his son. I would have told him about DJ but I couldn't contact him. He lost all connections with everyone in Seattle. So instead of telling him I told his parents. They were absolutely thrilled. I send pictures all the time and we visit them every summer. His parents receive letters from him but I have told them not to tell. I would rather me tell him instead of his parents.

End of Meredith's POV

"Mommy!" DJ yelled when he saw his mother. Meredith had not seen DJ since this morning when she dropped him off at school. Alex had picked him and his daughter, Aliya, from school and took them to the daycare. Since Alex, George, Izzie, and Christina were all working, no one could watch the kids. In another words, sleep over at the hospital!

Bailey was working as well so DJ would be joined by Will. Zac & Dylan (Christina and Burke's 5 year old twins) and Aliya (Alex and Izzie's 5 year old daughter) will all be there for the fun as well. There's always something fun going on in the on-call rooms!

"Hey Aunty Mer!" Zac, Dylan and Aliya said.

"Hey guys! We are going to the main floor on-call rooms. All of us adults will b close by so I expect you all to be sleeping." Meredith said in her motherly voice. "Christina, Alex I'm taking the kids now."

"You boys be good. I love you," Christina said giving her boys kisses. Both boys were a perfect mix of their parents. Having kids made Christina go soft and be kinder person but when it comes to bossing her interns around she's the new Nazi.

"My angel is always good right?" Alex said to Aliya.

"Of course, I love you daddy!" Aliya replied. She was a total daddy' girl. Aliya got most of her looks from Izzie and that's what Alex loves the most.

Meredith took all the kids to the on-call room and got them ready for bed. When ever DJ stayed the night at the hospital, he had to go to the roof before bed. It was the only way he would sleep through the night.

"Alright guys, you know the drill. I'll be right back," Meredith said. She carried DJ through the halls and to the roof. This was the time they used to talk about anything. Last week their conversation was about aliens.

"Mommy, when is daddy coming home?" DJ asked.

"I don't know sweetie but if you pray every night then maybe, maybe he'll come home," Meredith answered.

"It's just everybody at school has a dad and in school we're talking about where our family comes from. They all say how cool there is and I don't have one," DJ said sadly.

"Oh sweetie, don't worry. Your dad will come home. Just give it time," Meredith said as she kissed his head.

"Meredith?"

Meredith turned around to see…