Overview
S21 an Indian submarine which is deployed to guard PNS Ghazi a Pakistan submarine from entering India. War starts between the two submarines in the the Bay Of Bengal. The Captain Ranvijay Singh of S21 dies when it hits a naval mine set by Ghazi. After INS Vikrant looses the captain, Arjun Varma the second in command of S21 leads it and destroys PNS Ghazi after a series of attacks and counter attacks.
