Gabbar movie is an official remake of the 2002 critically and commercially successful Tamil A. R. Murugadoss film Ramana.
It was later remade in Telugu as Tagore and then in Kannada as Vishnu Sena.
Story in detail:
Gabbar Singh Rajput (Akshay Kumar) creates his own vigilante military network called the Anti-Corruption Force (ACF) that eliminates the most corrupt individuals, from all walks of life, in a systematic manner.
As pressure builds on Police and Government to track down the Man who masterminds these killings. Balbir Singh (Sonu Sood) is specially summoned to head the task.
He is aided by Suryam (Prakash Raj) who, though being just a constable in the mammoth Police force, is compelled by his instincts to see through the underlying design.