The ghazi attack story is based on the under water war. Ghazi was the submarine of pakistan which was defeated. In the movie staring Rana daggubati , Taapsee pannu , k k menon , rahul singh, om puri. According to pakistan the ghazi was exploded by their own mines but the movie reveals that it was an indian submarine named S-21 who defeats the ghazi by traping them by the torpedo.The story of the movie is real so its a true patriotic movie by the directorsankalp reddy. These is a heart touching movie for every indian. It was the story of 1971 just before the indo pak war at 3 dec 1971. It’s really a nice movie every should must watch.