Koel Mallick's movie debut was Nater Guru which had Actor Jeet in lead role. Her brilliant performance earned her best Actor in Leading Role Female from 4th Tele Cine Awards 2004. Even though Narter Guru has earned her a lot of fame 2005 was the year which changed her life. Shubhodrishti, Manik, Yuddho and Chore Chore Mastuto Bhai. are the ones which cemented her place in Bengali movie industry.