Popular actor Prithviraj is all set to strike back with the upcoming film 7th Day. The latest buzz from the unit is that the actor will be singing again for the film. Deepak Dev has composed music for the film. Prithvi will be playing the role of David Abraham, a 42-year-old IPS officer who is kicked out from the Crime Branch. He sets out to investigate a case which has not been recorded under the crime file. Shyandhar is going to debut as director with this film. Janani Iyer is going to play the female lead in the film. This is the first time Prithvi and Janani are going to act together. Ajmal Ameer, Vinay Fort, Praveen Prem and many others will be seen in the film.