Actor-director Ajay Devgn is all set to direct 'Bholaa' starring Tabu and himself in the lead roles. The upcoming film is the Hindi remake of 'Kaithi', a Tamil action-thriller which featured Karthi, Arjun Das and Narain among others in pivotal roles. Ajay has previously directed films like 'U Me Aur Hum', 'Shivaay' and 'Runway 34'.