After several showdown campaigns without field battles and mutual accusations for not respecting the Treaty of Chernomen, Michael Shishman and Andronikos III renegotiated peace in October 1328. The Bulgarians agreed not to take territory and were awarded large amount of money. As the relations between Bulgaria and Serbia were deteriorating and the two countries were on the course of war, Michael Shishman and Andronikos III organised a final meeting at Krimni between Sozopol and Anchialos in the beginning of 1329 and agreed to a "lasting peace and eternal alliance". They agreed to attack Serbia, but the Bulgarian army was defeated in the Battle of Velbazhd on 28 July 1330 and Michael Shishman was mortally wounded and died. When the news of the disaster reached Andronikos III, he abandoned the campaign against Serbia and turned on Bulgaria, but suffered a defeat at Rusokastro.