Prologue: Goku's idea
Goku and Vegeta were training in Beerus planet, fighting each other under Whis training like always even if Whis keep insisting that they reached the limit of their power and there's nothing he can teach them.
— Come on, Kakarot, use the Ultra Instinct form and face me with your full power already.
— I already said that Vegeta, since the tournament ended I wasn't able to do reach that form again, doesn't matter how hard I try.
— Then we'll never get stronger like this, we already mastered Super Saiyan Blue, our fights are always ending in a draw and we still can't beat Beerus like this.
— Yeah, but he's almost using all of his power against us.
— Enough – Said Whis – Are you two finally realizing that you reach your limit? I already said that the only way for you to get stronger is by working together, not even Master Beerus would stand a chance if the two if you unite against him, but you saiyans are way too stubborn to do that.
— Humpf, I don't need this idiot to defeat Beerus, I'll do it with my own power, like a true Saiyan warrior.
— I have to agree with Vegeta on that, I want to face him fair and square on a one on one battle, team up against him would be no fun.
— It seems that is the only thing you two can agree on.
— Are you two still insisting in facing me? – Said Beerus, appearing behind them.
— M-Master Beerus?! When did you wake up? – Asked Vegeta, surprised by his sudden voice behind him.
— How would anyone be able to sleep with you two screaming all the time? Can't you fight each other in silence for a change? And what's the point of continuing with this training? Aren't you two satisfied with your current power?
— Of course not, I bet Jiren is also giving his best to get even stronger in his universe, I want to give him a good fight next time we face each other… wait, that gives me an idea, if we can't find anyone to train with in this universe, why don't we go to another one?
— Not your worse idea, Kakarot, perhaps in another universe we can find a real challenge.
— Absolutely not – Said Beerus - you think travelling across universes is like a walk in the park? There are consequences for leaving your own universe, you can't do it simply because you want to.
— But Champa came here before, and we visited his universe too, and Zamasu attacked Future Trunks, and those guys from another universe tried to attack me and Freeza before the tournament, so why can't we do it?
Beerus got speechless by Goku's answer.
— He got you now, Master Beerus. – Said Whis.
— I hate to admit, but Kakarot have a point, there is no real reason to stay here, and I promised Cabba that I would visit his planet after the tournament was over.
— Hehe, yeah, I'm curious to know how strong Kale and Caulifla got too, that transformation with the green hair was unbelievably strong, and maybe Caulifla already mastered Super Saiyan 3 as well.
— NO! I WON'T TRAVEL TO ANOTHER UNIVERSE JUST BECAUSE YOU IDIOTS WANT TO GET STRONGER! – Screamed Beerus, out of frustration.
— That may not be a bad idea, Master Beerus, and besides, aren't you curious to know how the Earth's food of Universe 6 tastes like?
— E-Earth's food?!
Beerus started pondering with the idea, after a few seconds, he finally gave his answer.
— Very well, it may be a good opportunity to shove on my brother's face how superior the food of my universe really is.
— Yes! So that means we can go train with the Saiyans in Universe 6 as well? – Asked Goku, excited with Beeru's answer.
— Yeah, yeah, sure, whatever, let's go, Whis.
Goku, Vegeta, Whis and Beerus got inside the cube and prepared to visit the Universe 6.
Chapter 1: Arriving at Planet Sadala
Whis led the saiyans to Universe 6 and dropped them on a hill on Planet Sadala, the home planet of the saiyans in that universe.
— Alright, Goku, Vegeta, this is the planet of the saiyans of this universe, you two can train here while me and Master Beerus pay a visit to Champa.
After saying that, Whis parted away with the cube, leaving Goku and Vegeta alone in the planet, but their sudden arrival didn't pass unnoticed by the saiyans, right after Whis left with the cube, an old man with chin beard and ponytail approached them, walking with the help of a walking stick.
— You there! – Said the man in a threatening tone – What are you doing in our planet?
Goku and Vegeta turned around to face the man, although they couldn't see anyone else, they could feel multiple sources of energy surrounding them.
— Vegeta, are you feeling this? – Asked Goku, looking at his surroundings.
— Yes, looks like they think we are a threat. – Answered Vegeta.
— Answer me! – Demanded the man.
But before they could answer, they heard the kind and confused voice of a woman.
— Hmm? Renso? What is happening? – Said the woman, addressing to the old man.
— Kale! Step back! These men invaded our planet!
Goku recognized that name and turned around to greet Kale.
— Kale? Hey! We are not invading anything.
Kale also recognized the faces of Goku and Vegeta.
— Goku? Vegeta?
— Huh? Kale, you know these men? – Asked the man.
— Yes, these are the saiyans from the tournament Cabba talked about.
— The saiyans… Oh! Please forgive me! I didn't know it was them! Mister Goku, Vegeta, I assume you are here to visit Cabba, right?
— Yes, sorry for all the confusion. – Said Goku.
— Don't worry about it, it was my fault for just assuming you were the enemy, it's a pleasure to finally meet you! Cabba said great things about you two!
— And where is he right now? – Asked Vegeta
— Cabba is probably training our troops right now, he's trying to teach them to transform into Super Saiyans too, Kale, please escort them, I'd do it myself but my legs wouldn't allow me.
— Yes… please follow me.
Kale started leading them to where Cabba was.
— Who was that man? – Asked Vegeta.
— That's Renso, he's Caulifla's older brother, he retired as a captain from our army but he returned after the tournament.
— Really? How strong is he? – Asked Goku.
— Hmm, nowadays he isn't that strong anymore, but when he was younger he was the stronger fighter of our planet, but he stopped fighting after he injured his leg.
— And how much have you trained since our last fight, Kale? – Asked Goku.
— N-Not much! I'm not that good of a fighter.
— That's not true! You were incredible when you transformed with that green hair! I never saw anything like it! You were overflowing with energy!
Before they could continue with the conversation, two familiar voices arguing with each other caught their attention.
— Come on, Cabba! Fight me already!
— I can't now, Caulifla, your brother trusted me to train our troops.
— You can do that later, no one in this planet is strong enough to give me a good fight.
— Why don't you ask Kale? She is way stronger than me.
— I asked her a million times but she's always like "f-fight you?! I could never do that, big sis", come on, you said you would help me reach Super Saiyan 3!
— I told you, I don't have time to fight you!
— Hmpf, you want to impress Vegeta but you haven't got any stronger since the tournament, I bet he'd be disappointed with you. – Said Caulifla, teasing Cabba.
— She is right! – Screamed Vegeta, surprising Cabba and Caulifla – I came here expecting to see some progress but from where I'm standing, you haven't got any stronger!
— V-Vegeta?! – Screamed Cabba – When did you got here?!
— That doesn't matter, a true Saiyan never run from a fight! Don't you have any pride?!
— But… but I have to train my troops! – Said Cabba.
— How do you expect to train an army if you don't train yourself first? Haven't you learn anything from me?
— But Master, I-
— Enough of your pathetic excuses, Kakarot, call Whis back here, seems like this whole trip was a waste of time.
— Come on, Vegeta, you're exaggerating. – Said Goku.
— Don't be an idiot, Kakarot, we came here to get stronger, but it seems like we should've stayed back and train with Whis instead. - Said Vegeta, turning his back to Cabba and walking away.
— Ok, ok, I'll fight! You're right, I should train myself before ever thinking of training anyone else, Master! Please fight with –
Before Cabba could finish his sentence, Caulifla punched him out of the way and ran towards Goku.
— Goku! You'll fight me, right? – Said Caulifla, excited by seeing him.
— Hehe, that's why I came here, alright, are you ready, Caulifla? – Said Goku, getting in his battle pose.
— Wait, wait, wait! You can't fight here! – Said Cabba - All of our training equipment is here! If you fight you'll break everything!
— Oh, right, I didn't think about that. – Said Goku – So where else should we fight?
— I know! Let's go to the old abandoned arena near my lookout! – Said Caulifla.
— The old arena? But your brother told us to stay away from there, specially this time of the year because of some storms around there!
— Huh, are you running away from a fight again? – Asked Caulifla.
After hearing that, Vegeta gave Cabba a menacing look that sent shivers down his spine.
— O-of course not! I'm right behind you.
— Then let's go, no one will bother us there.
And with that, the Saiyans flied towards the old arena where their battle was about to start.