If you ever get stuck, ask yourself what happens next, then next, then next. Don’t get an idea for a situation; develop the arc for your story. Pretty much every story goes like this: Someone is complacent, they face a challenge, the challenge nearly beats them, they find a way to conquer the challenge, then emerge changed at the other end. There are variations and anti-stories of course, but those are time-tested standards. Make sure you have at least a basic idea of your elements before starting if you have even the slightest doubts about your ability to reach the end.
