The last version of the logline doesn't describe a dramatic premise, and I think you're looking at loglines, in general, in the wrong way.? You've described? an inciting incident in all the logline's iterations - a major event that affects the world of the MC, but you've not described a direct causality between that and the Mc's goal. It remains unclear what he or she MUST achieve by the end of the story, or else a very bad thing will happen.
For a dramatic premise to exist you need a goal and motivation, otherwise it's just random events loosely connected via geography and character involvement. In essence, a good logline, and by extension a good concept, is made up of three main components; a significant inciting incident, high stakes and a compelling goal.
A few side notes, often the high stakes are best coupled with something personal to the MC, and a good character will be flawed. The flaw is only briefly described in the logline so as to indicate the inner journey, or the lesson, the main character will undergo throughout the story.
If you think all this can't be achieved in a single (approximately 30 words or less) logline, I invite you to read through the multiple examples posted already in other threads and study the Training tab up top again. There is a formula for logline construction, and it works not as a formula for the creative process of story invention, rather purely as a structuring tool to help writers include all the necessary elements in a logline.
Back to your logline, what MOTIVATES the MC to HAVE to achieve the specific GOAL?