Storyline is a one sentence summary of your novel
Storyline is a selling tool that helps in your novel success.

If you want to write a commercially successful novel, then you need to sell your book not once, but seven times. This is known as the "selling chain," and it’s a vital process to ensure your novel reaches the hands of readers. Every link in this chain plays a crucial role, and breaking any part can cause your book to fall short of its potential.