Bollywood star Nawazuddin Siddiqui is a veteran and capable of playing even unconventional roles. He plays a school teacher in the upcoming film `Haraamkhor`. Its director Shlok Sharma says the movie is primarily a love story, and based on the very delicate relationship between a guru and his shishya (disciple). Shishya is played by Shweta Tripathi. Nawazuddin as Shyam adds a number of layers to his character.