National Award-winning director Nila Madhab Panda's Halkaa, which premiered at the 2018 Festival International du Film Pour Enfants de Montréal, has bagged the top honour - the Grand Prix de Montreal. Halkaa was selected among seven international children's films from different countries in the official competition of the festival, which ended on March 11. The film stars child actor Tathastu, Ranvir Shorey and Paoli Dam.