I'm trying to make a story for a book I hope to make later in life, But here's the basic rundown.

The story takes place in a solar system similar to our own but instead of one planet harboring life there are seven. Each of which represent an entity, such as water, fire, darkness, light, ect. Each of these planets also have specific gods to protect them. Our characters are a team that include young adults from each of these planets, and no it's not just one person per planet. Each of these characters have certain powers based on where they originate (this does not include earth).

That's just a basic run down of what it is. Any ideas for a story?