Earth-38

National City.

Supergirl flew into her apartment switched out of her work clothes and into her civvies as Kara Danvers. The sudden beeping caught her attention, realizing what it meant Kara headed to her dresser drawer and pulled out the inter-dimensional extrapolator that Cisco Ramon gave her last week. When her friend Barry Allen needed her help in fighting an alien invasion on his universe Cisco gave her the device as a way for her to travel between their universes at will and should another dangerous situation need she could communicate with them for help and vice versa. Kara clicked the device as a voice was heard.

'Kara?' the familiar voice asked.

'Hey Barry, need help with another alien invasion?' Kara asked jokingly.

'No, at least not yet thank god. Actually, my house is having a get together for Christmas and we were wondering if you'd like to come over.' Barry asked.

'What's Christmas, is that what they call dinner on your earth?' Kara asked innocently.

'Oh uh Christmas is a Holiday that we celebrate every year on December 25th, that's the 25th day of the twelfth month….' Barry began to explain only for Kara to giggle uncontrollably.

'Barry I'm messing with you, we have Christmas on my earth too.' Kara breathed.

'Right.' Barry said feeling a little like a dope.

'And I'd be honored to come over.' Kara said enthusiastically 'I hope you don't mind but can I bring some people along Winn was fascinated with the inter-dimensional extrapolator and has been dying to meet the one who made it.'

'Sure, the more the merrier.' Barry replied happily.

Earth-1

Central City

West family residence.

'You think it's a good idea to invite your new friends to our annual party, Barr?' Joe asked hesitantly. While he knew, Julian would have had no problems with the existence of other dimensions and aliens, not since he learned Barry was the Flash he wasn't sure that it was a good idea especially in the company of his now-girlfriend D.A. Cecile Horton who out off all of them was the only one not aware of what their side jobs were.

'It's fine I explained to Kara that she's to pretend that they're from out of town, luckily we have a National City here on Earth-1.' Barry reassured his foster dad.

'Well you better pray Cisco's gadget doesn't open up a breach in the middle of our living room. I'm going to have a hard time explaining that.' Joe reiterated. A sudden knock on the door snapped them back to their senses as Barry went to answer it. Opening it he was greeted to the sight of the smiling glasses wearing blonde who grinned happily.

'Barry, Merry Christmas.' Kara said happily as they embraced in a hug.

'Glad to have you here.' Barry greeted as he took notice of the three people that Kara had brought with her. A familiar boy in a striped shirt and tie came over and shook his hand.

'Winn its good to see you again.' Barry smiled at the resident tech genius of Kara's world.

'You too, Barry.' Winn agreed 'Say I was meaning to ask about the device Kara got from you about what makes it tick.'

'Well I didn't make it my buddy Cisco did.' Barry said gesturing to the Hispanic boy with long hair talking with a brunette girl near the dinner table.

'You'll like him.' Barry said

'That's what I said.' Kara smiled in agreement.

Winn walked off to introduce himself to Cisco as Barry got a closer look at the other two of Kara's guests. One was a woman in her early thirties with auburn hair that she wore in a bob cut and a tall middle-aged dark-skinned man.

'This is my sister Alex.' Kara introduced as Barry shook hands with the older woman.

'Ah, the famous sister. Nice to finally put a face to the name' Barry beamed. The first time he visited Earth-38, Kara mentioned that she had a sister that was currently missing at the time.

'Likewise,' Alex agreed having heard the stories from Kara about the Scarlett Speedster that she missed out on meeting last year given she and J'onn were on the run from the DEO at the time. This was her first meeting with the metahuman superhero that helped Kara fight Livewire and Silver Banshee.

'And this is J'onn.' Kara gestured to the tall man behind her, who also shook Barry's hand.

'Nice to meet you John.' Barry greeted

'J'onn.' Kara corrected putting emphasis on the first and last syllables of his name.

'J'onn.' Barry repeated the proper pronunciation 'Is that a French name?' the speedster wondered as there was an accent.

'Martian actually.' The man replied as Barry's eyes grew wide from the revelation.

'Martian?! You're from Mars?!' Barry excitedly whispered while trying to avoid the earshot of Julian and Horton to which J'onn smiled and nodded in affirmingly.

'It is an honor to be invited to your home Mr. Allen.' The Martian said humbly.

'Please, Barry' the young man insisted as he gestured Alex and J'onn into his living room as Kara stayed near him while he closed the door.

'Hey uh where's James?' Barry asked curiously as the reporter from his last visit was not among them.

'Oh, he decided to spend Christmas back home since he and my cousin go snowboarding every year.' Kara explained. 'Hey are any other of our super friends going to be joining us?' she asked hoping some of the people she stopped the Dominators with would show up for the festivities.

'Well Sara and her team are probably busy keeping the timeline safe. And even though I send an invite I doubt Oliver and company would be joining us.' Barry answered.

'Does that guy ever lighten up?' Kara asked innocently after her initial encounter with the emerald archer she knew the man was all business when it came to their line of work and after their initial rocky meeting she knew Oliver was probably the most abrasive people she ever met. He wasn't bad or anything just seemed to take everything seriously to the point she questioned weather or not the man was capable of relaxing. Kara often wondered maybe that's why she and Barry became fast friends, the two of them just seemed to be cut from the same cloth.

'As Mayor, I don't expect Ollie would have a free schedule to pop over here.' Barry explained.

'Wait he's a Mayor?' Kara asked kind of surprised the Green Arrow's day job was as a politician.

'Plus, if the last four years are any indication, Supervillain attacks tend to occur in his city every Christmas.' Barry quipped.

'You're not serious?' Kara asked in disbelief.

'No lie. Four years ago, a copycat archer went on a massacre. Three years ago, which was when I first met Oliver a super soldier broke into his family's company. Two years ago, Oliver went missing and just last year a group of terrorists shot up a limo with him and Felicity inside.' Barry listed the numerous events that seemed to befall their mutual friend and his city every time this year.

'Yikes, seems like seasons greetings and good-will isn't a sentiment in Star City.' Kara sarcastically remarked. 'I'm Christmas wishing that nothing bad happens this time.'

Barry smirked at Kara's season optimism 'Well regardless having the four of you here is a Christmas gift in its self.' Barry said as he escorted Kara to the buffet table, while his mind was still preoccupied with what he saw in the future Barry knew that he needed to live his life and having a kindred spirit like Kara around was enough to ease his turmoil.