I have no idea what this is. I don't know what I was thinking about when I wrote it. The following is a two-part modern AU, one of my older drabbles that never got posted. Recently I got some ideas, so I'm working on writing a bunch of new ones, but for now here's this one.
They decide to go on the road trip. Sokka doesn't know why, exactly—they just met Aang, there's no reason they should care whether the kid ever finds his family.
But Katara is that kind of person, and Sokka can't just let her go, so he joins his little sister and her crazy new friend with his tattoos and his dog Appa.
They take the old RV that no one's taken on a road trip in years, not since their father was stationed overseas. It brings back memories—but it's okay. He's not sure how this happened, but it's okay.