Tips for computer science student from third world country wanting to develop a 15 year plan to make a significant contribution to the field

I'll be able to finish my Computer Science degree next year, but I'm thinking of what are my options for my career and my education.

NOTE: My college education is not really top-notch (third world country), most of my knowledge is based on self-study from related knowledge on a courses.

I'm thinking of taking a Masters Degree (in Computer Science) 2-3 years after I graduate, hopefully that I already earned enough money to do that. Then proceed on my own research, probably related to artificial intelligence. Then take the route to be a professor, and if everything will be smooth, I'm aiming for a doctorate degree.

Is this the correct plan that I should take? My goal is to have a significant contribution to this field, as my country is not really well known in this field (the most famous one in my country, created a virus).

Any tips on what I should do/take first to achieve my goals? I'm also thinking of taking my graduate studies in other countries, since this field is not really good in this country (the computer science degree here is almost identical to Information Technology, maybe a bit harder on most cases but almost no distinction).