Author Note: I hope that you like this storyline. There will be 12 chapters in this storyline and I hope that you like this storyline. Now each chapter will be posted by 11:59pm (PST) each night until Christmas. I hope that you like this storyline and make sure that you review and let me know what you think of it. This storyline is for Callen and special OC. I don't know what character yet. I started to write it on December 1st and the first one is going to be posted on December 13, 2013. The word goal for this storyline is going to be just as longer as the ones that I attempted to posted. I hope that you enjoy this storyline. Don't forget to check out Callen's December wish and this week's one take Monday storyline.

Disclaimer: I don't own any of the characters that you have seen on the show. I just own my character Christina.

Characters summary:

Callen accidentally falls for the new co-worker when Sam is on vacation but will this be the start of their relationship or will Hetty forced her to leave?

Christina just joined the team and Hetty assigned her to work with Callen while Sam is on a vacation with his family. Will romance bloom for her and Callen?

Chapter one: 12 days until Christmas

That morning

Christina walked into the bathroom knowing that she could not be late for work since it was her first day of being there. He was all ready to go and headed for her car. She got to work with enough time to not be late. She walked to the front door and opened it. She was surprised to see a small woman standing there.

"Are you Christina?" Hetty asked her.

"Yes I am." She responded to her new boss.

"Welcome to the team. Now we are a partner short so I am going to put you with him until his partner comes back. I hope that's okay with you." Hetty revealed to her.

"That's perfectly okay with me." She responded as Deeks walked past her.

"Aw. Mr. Deeks, have you seen Mr. Callen?" She asked Deeks as he turned around to look at her.

"He's upstairs waiting for us to get up there. Why?" He responded to his boss.

"Because he has a new partner until Mr. Hanna comes back from his vacation." She revealed to him. "Now can you get Callen come down here."

"Yes." He said as he turns to head upstairs to get Callen. About two minutes later, she sees the man come down the stairs and she assumes that it was Callen. He walked over to them and smiled.

"Hi, my name is G Callen." He revealed to her.

"Christina." She said to him. "I guess that I am going to be your new partner until Sam gets back."

"Alright let's go. We have a case." He responded back to her as they headed upstairs.

Christina and Callen headed on their first case together. He was okay with being partner with her. He just hoped that if there was a gun fight that she would have his back. Just Callen's luck, there was a gun fight and now Callen's having to make sure that she will be okay and so does she.

When they got back to headquarters, they found Hetty waiting for them. She was happy to see that they were working together so great. They finished up the paperwork and headed home.

Callen walked into his house after a long day at work. He had gotten a new partner since Sam had left for his Christmas vacation. He knew that she was just there to help them with cases until they went on Christmas break. Callen decided to call Sam and let him know about the person that temporary replacement.

"Hey so how was the person's first day?" Sam asked his friend.

"It was fine until we found out that we were going to have a female agent." He responded to him.

"How did that go down with Kensi?" Sam asked his friend.

"It went down with her just fine. The girls got to partner together while I got stuck with Deeks. Did you know that he was messing with everything in my car?" Callen revealed to his friend.

"Maybe we should have listen to Kensi." Sam responded to him.

"Yeah now we know. I think that I am going to put her with Deeks tomorrow morning for our case." Callen responded to him.

"That sounds nice." Sam responded to him. "Hey I need to go."

"Okay bye." Callen responded to him.

Callen decided to go and make his dinner after hanging up the phone. He knew that tomorrow would be a better day for their team. He really did like this new agent but he knew Hetty rule about dating coworkers. He knew it would be dangerous if they started to date.

Author Note: alright that's the end of this first chapter and I hope that you will enjoy the next twelve days until Christmas. I started to write this storyline and Steve's on November 30. Don't forget to check out tomorrow chapter to find out what happens on chapter two of this storyline. Please don't forget to review and let me know what you think of it. Also don't forget to follow me on Twitter as carson34ff where I would love to chat with you and get to know you. I am sorry if this chapter is shorter than what you would want it to be but I wanted to make sure that this chapter is posted on time. See you tomorrow for the next chapter of this storyline.

Don't forget to watch NCISLA on Tuesday night and then tune into my season storyline. Hopefully you guys will like this. What do you think about the new character?