Mouni Roy, who recently made news for stepping out of Nawazuddin Siddiqui starrer Bole Chudiyan, will be seen playing a woman with negative shades in Ayan Mukherjee's much-anticipated movie Brahmastra. Initially, the actress was taken aback by the unexpected offer, however, she is happy to be a part of this project. The Nagin star had a great experience working with Alia Bhatt and Ranbir Kapoor, who play the leads in this fantasy film. "They are such wonderful and giving co-actors," he said. "They’ve ensured I give my best," she added.