Our desitnies are affected by our choices. Not God's plan. God'splan is to save those who come to Him. His sacrifice on the cross made that possible for all.
It is now heading toward its end. Within it all choices are free AND it will not deviate in its destination
This world will end as we know it and everyone in it shall die. What happens to our souls is up to God and He tells us that some will be saved and others will perish. Tose who perish will perish because of their refusal to repent. Not because God wants them to perish.
Kosta, if everything-that-there-is-or-can-be is known PERFECTLY, then there can be ZERO deviations from it.