I don't watch it and thought the same thing

Is that not what's happening here?

A young boy fell from his space capsule that exploded and he is unconscious. His mom (purple robot thing) is angry and some curious hoomans are investigating

Hmmm
I see nothing wrong with this description.

As a steven universe fan, I can confirm that they are multicolored lesbians.

The question was someone who has never seen it

I can never tell what emotion Garnet is thinking wtf them Pearl n Amethyst are lik STEVEN WHAT THE FUUU

What's this episode called?