The brothers have a case and they both have to go so they call in Cas to babysit Sophia for the day. Sophia was sitting quietly in her booster seat eating lucky charms while Dean and Sam were going over Sophia's schedule.

"Alright Cas she's eating breakfast now so when she's finished she can play then at about 12:30 give her some lunch but remember no nuts even peanut butter, no strawberries, and no milk unless it's soy milk, her nap is from about 1-3:30 when she wakes up she'll have her snack then she can play we'll be home in time for dinner". Dean explained.

"Anything else i should be aware of?" Cas asked.

"Demons, angels, and anything else supernatural like". Sam said.

"She will be fine and protected with me". Cas said.

"She better be". Dean muttered.

"Alright like we said we'll be home around dinner so don't worry about cooking we'll pick something up". Sam said.

"Is she allowed outside?" Cas asked.

"If you mean can you take her to the park then yes you can but keep a very close eye on her and for whatever reason don't let her out of your sight". Dean said.

"Ok". Cas said.

Sophia then hopped down from the booster seat and went to her big brothers and tugged on Sam's suit pants.

"Hey princess you all done eating?" Sam asked picking her up.

"Yeah. Where you and De going? I wanna go. Can i go pwease Sammy pwease". Sophia said using the puppy dog eyes.

"Sorry princess not this time me and Dean...have to go to work so were gonna leave you with Uncle Cas and he's gonna watch you for today ok". Sam said.

"But i wanna go wif you and De". Sophia said with tears pooling her eyes.

"Come here baby girl". Dean said taking her from Sam.

Sophia let the tears in her eyes escape and Dean wiped them with his thumb.

"I know you wanna come with me and Sammy but our job is very dangerous and we don't need you getting hurt. You understand right". Dean said gently.

"Yea. You'll come back right? You won't leave me will you?" Sophia asked.

"We will never ever leave you Soph. We would never want to leave our favorite little girl at all". Dean said.

"So Uncle Cas is gonna watch me?" Sophia asked playing with Dean's tie.

"Yeah and we will be back at dinner time so promise me you'll be a good little girl for Uncle Cas and not give him a hard time". Dean said.

"I promise". Sophia said.

"That's my girl". Dean said.

Dean then passed Sophia off to Cas.

"Remember Soph we'll be back at dinner time and be good for Uncle Cas ok". Sam said.

"Ok Sammy". Sophia said.

"Good girl". Sam said.

"Bye my little princess. Be good". Dean said.

"Bye Soph have fun with Uncle Cas". Sam said.

"Bye bye De. Bye bye Sammy". Sophia said.

Dean then took her from Cas for a quick minute to hug her then passed her to Sam who then gave her back to Cas and right before they left they kissed her head. Dean and Sam then left leaving Cas to watch Sophia for the whole day.

"Alright Sophia what do you wanna do today?" Cas asked the toddler.

"Park Uncle Cas". Sophia said excitedly.

"Ok park it is". Cas said.

Cas then took the energized toddler to the park and since it was a weekday no one was there.

"Alright Sophia what do you want to play on first?" Cas asked.

"Swing". Sophia replied.

"Let's go then". Cas said.

Cas then puts Sophia on the swing and begins to push her higher and higher but not too high. After a few minutes she grew bored of the swing and she went to the slide while Cas went to sit down and watch her as she played. She played on the slide, on the rockable animals, and played on the jungle gym. At about 12:15 Cas knew it was time for Sophia to eat lunch then take a nap.

"Alright Sophia it's time for lunch". Cas said picking her up.

"Ok". Sophia said tugging his tie.

Cas then teleported them back to the bunker and set Sophia in the booster seat while he prepared her lunch. After a few minutes he returned with a small plate of food which contained chicken nuggets, fries, apple slices and a cup of juice. After Sophia ate that she then began to feel a bit restless and fussy.

"Sophia you gotta take a nap". Cas said.

"No. Want De and Sammy". Sophia said.

"Sophia there at work". Cas said.

By the minute she kept getting more and more fussier by the minute, Cas then began gently bouncing her to calm her then he started humming a lullaby and Sophia began to calm down then after a couple of minutes sleep finally took over her. Cas then brought the sleeping toddler up to her room so she could rest for a couple of hours, he then remembered what Dean or Sam did for protection so he salted the window ledge and her door so demons can not come in he then put a protection symbol around the bunker so nothing can attack.

Time skip

It's now a little after 3 in the afternoon and Sophia woke up from her nap so she gets out of her bed and goes downstairs but avoids the salt lines she sees Cas reading a stack of papers she then toddles over to him and tugs on his pants to get his attention, Cas then looks down to see Sophia with one of her thumbs in her mouth and he picks her up fixing her frizzy hair.

"Hey little princess, have a good nap?" Cas asked.

"Mhm. I hungree Uncle Cas". Sophia said.

"Alright let me see what your brothers left you so you sit in your seat and i'll get it". Cas said.

"Ok". Sophia said.

Cas then moved his work so she doesn't get a hold of it, he then sets her in the booster seat and hands her a couple pieces of paper with some crayons letting her draw while he prepares her snack. After a couple of minutes he then returns with a small bowl of yogurt and fruit that Sophia can eat since it's for lactose intolerant people. She moves her pictures out of the way and begins eating the yogurt, once after all the yogurt is gone he took Sophia out the booster seat and set her play mat out with a few toys, her pictures she was drawing and her crayons.

Time skip

It's about 7 at night now and Cas is looking over the papers from earlier while glancing at Sophia to make sure she is still fine, Sophia was finished with her toys so she put them away and she was then coloring pictures on her playmat. After 5 minutes the front door opened and Dean peaked his head around and Sophia saw him running straight to him.

"De!" Sophia yelled in excitement.

"There's my favorite girl. Were you good for Uncle Cas today". Dean asked.

"Yeah De". Sophia said.

"Did i hear my favorite little girl?" Sam asked.

"Sammy". Sophia yelled in excitement.

"Hey princess". Sam said.

"Were you good today?" Dean asked.

"Yeah i drew you pictures". Sophia said excitedly.

"Did you now can we see?" Sam asked.

"Yeah". Sophia said.

Sam set her down and she scurried to get her pictures while Dean and Sam took off the suit and ties, she then has all the drawings and goes to Dean tugging on his pants leg.

"I got da pictures De". Sophia said.

"Let see Soph". Dean said.

Sophia then handed the drawings to Sam while Dean adjusted Sophia in his arms.

"Wow Dean we have a little artist in our mitts". Sam said.

"Let me see". Dean said.

Sophia then went to Sam while Dean looked over her pictures which were really good for a toddler.

"Your right Sammy we do have a little artist". Dean said tickling his sister's side.

Sophia giggled then fought Dean's hand away then Sam set her in her booster seat to get her dinner ready, Sam then set her dinner in front of her while he and Dean went to change. After they change into regular clothes they see Sophia dozing off in her booster seat so Sam went to get her while Dean cleaned her mess up. Sam then went to change Sophia for bed then a few minutes after that Cas and Dean then entered the room and Sophia got just a bit fussy.

"Come on Soph it's time to go to sleep". Sam said bouncing her.

"No Sleep Sammy no we play". Sophia said.

"Soph we can play tomorrow right now it's time for bed". Sam said.

"No we play Sammy". Sophia said in a slur.

"Sam let me try". Dean said.

Sam then passed his sleepy sister off to his older brother, Dean then began gently bouncing Sophia while singing 'Hey Jude' she then stopped fussing and started to get sleepy. He then set her down in the bed and pulled the blanket up to her shoulders and placed her bear in her arms.

"N'night De...N'night Sammy...N'night Unca Cas". Sophia said in a sleepy slur.

"Sweet dreams Soph". Dean whispered.

"Sleep tight baby girl". Sam whispered.

"Good night little one". Cas whispered.

After Sophia fell asleep and went to dream land Dean quietly salted her room then he, Sam, and Cas left the room so they would not disturb her.