A pirate "and" a robot? (As your 2 characters?)
Or, is it, 2 pirates that are robots?
(Coincidence that your 3 replies back are all asking for more details about your characters, but the reason is, your story starts with your characters, and your characters basically write your plot.)
May I ask why you chose a pirate/robot kind of image? Is it just something you've always wanted to design as a designer/artist and you would find this image visually pleasing and unique? Or, is this for a class or contest, and they threw 2 random things at you to work with?

(Or, other?)
For something fast and 50 seconds -
I would see what you could sketch up with the "Tom and Jerry" route with your storyline.
For example:
With all the Tom and Jerry cartoons, it's basically the same plot, which is, the cat always wants to chase the mouse (with deep and angry but comical passion), and the mouse always wants to get away (but not without seriously humiliating the cat first, whether deliberate or accidental).
Sidenote: It's been many years since I've watched Tom and Jerry back-to-back, so correct me if i'm wrong. It's a love-hate relationship, right? And the above is correct?
So apply to your story the following:
Choose a very predictable storyline defined by your characters' human nature [ or animal nature or programmed machine nature

], and "show don't tell" while using "cause-effect-consequences" as a tool to create your scenes.
So how would you do this with 1 pirate and 1 robot as your 2 characters? They're not exactly stereotypical opposites or stereotypical enemies (like a cat and mouse), where the objectives and battles are obvious and eternal (in a stereotypical world).
But an idea is to always have the pirate after some kind of treasure. That's his ongoing and eternal goal. He's always after stealing someone else's goods, money, and gold (in a futuristic world, in your case), and will keep trying different ways at it...
Punish that behaviour in different ways that are humorous, (using Tom and Jerry as your boilerplate or skeleton). Anyway, you wouldn't want to reward ruthless pirate nature, would you? And regardless of the ways he suffers the consequences of his actions, the pirate just keeps going and going, keeps on trying, and keeps on failing. And his punishments are always amusing to watch... (After all, you'd rather see the bad guy get punished for his bad actions, right? And the nice guy always has a guardian angel and/or "brains" over brawn.)
You could throw a twist to the robot, like- although it's a futuristic world, for some reason, he just opted out of getting all the necessary upgrades and virus protection~ and so the robot has all these glitches, needs to reboot all the time, and maybe gets blue-screen on his face once in a while. When the robot looks like he's weak, this is when the pirate always goes for the attack, thinking it's an easy victory. "But it's just not."