Madhur Bhandarkar's ambitious project Heroine is back on track with Kareena Kapoor stepping into the shoes of actress Aishwarya Rai as the lead actress and the filmmaker says the movie will be a landmark movie in Bebo's career.Kareena Kapoor. Pic/AFPShe (Kareena) is a great star. We have always talked about working together and even discussed a lot of films but nothing materialized. But 'Heroine' is a great script and a great story. I am sure it will be a landmark cinema in Kareena's career, said Bhandarkar at the red carpet of Airtel Super Star Awards.Bhandarkar's film hit a roadblock after Aishwarya opted out of the project following her pregnancy. Ash gave birth to a baby girl Wednesday.The filmmaker hopes the film doesn't get into any other problem.'Heroine' is basically a journey in a heroine's life in the contemporary world. It's going to portray how an actress reaches the top and how her life goes through ups and downs. There are lot of catharsis and traumas shown in the film, said Bhandarkar, known for making films like Page 3, Fashion and Traffic Signal. Right now, the film is on track and shooting will start November end and we will finish by March-April. Hope you all like it, he added.