Kalavu is a ZEE5 Tamil Original starring Kalaiyarasan, Abhirami Iyer, Karunakaran, Vatsan Chakravarthy and Venkat Prabhu. The crime thriller is written and directed by Murali Karthick. After being attacked by three unidentified men, Shruti is rushed to the hospital. The very same night, three drunk friends, Sujith, Ramesh and Stephen, are arrested by the police under the suspicion of attacking Shruti. Meanwhile, Shruti passes away in the hospital under mysterious circumstances and the three friends struggle to prove their innocence.