Shishman was a vassal of Nogai Khan, Khan of the Golden Horde and sought to expand his territories to the west, invading Serbia coming as far as Hvosno, the Bulgarians failed to capture Zdrelo (near Peć) and were pursued back to Vidin by the Serbs. Milutin devastated Vidin and the rest of Shishman's dominion, making Shishman take refuge on the other side of the Danube. The two however became allies after Milutin married Serbian župan Dragoš to the daughter of Shishman, later Milutin would give his daughter Neda (with title Anna) to Shishman's son Michael who would become the Tsar of Bulgaria in 1323.