If you're talking about a narrative story - then a story needs a lot of components.
1. It needs a strong start aka sizzling start
2. With the basics, you'll need characters, if it is a short story, mainly only 3-4 characters. There should be a protagonist (the good guy, hero) and an antagonist (the bad guy, the people that try to stop the good guy).
Most good stories should have a suspenseful scene, (or even more than one) to help keep the reader interested.
Try use descriptive adjectives and put some emotion into the story to impact the reader more.
Hope this helps - of course there's alot. But I can only think of these for now.
- Good luck xx