'Jaggiradhai' actress Arundathi has been signed on for a movie titled 'Ardhanaari' where she will play the role of an undercover cop. The movie will be directed by award-winning filmmaker Bala's son Sundara Ilangovan. “The script of the film revolves around a lady cop who goes undercover for an assignment. The challenges she faces as a woman in her duty and how she overcomes it forms the crux of the plot. There are minor references in this film to the service sector, especially the police force, which is still considered a male bastion, despite the fact that many women carving a niche in the profession. Any similarity of current issues to the ones discussed in the film, is only coincidental,” director Sundara claims. The actress had to go through a workshop to get into the skin of her character. “I took training with a few real life police officers to get that tough body language, and to learn things like holding a gun,” she said.