A short story titled 'the new tribe' could cover a wide range of themes. It could be about the relationships within the tribe, like family bonds, friendships, or rivalries. It might also explore the tribe's beliefs and superstitions. For instance, if they believe in certain spirits or deities and how those beliefs shape their actions. Additionally, it could be set in a post - apocalyptic scenario where a new tribe is formed out of the remnants of society, and the story could be about their struggle for survival and rebuilding.
I'm not sure specifically as I haven't read it. But generally, a short story about a new tribe could be about their unique culture, traditions, social structure, or how they interact with the outside world.