Synopsis:

It is inspired by true events from the 1971 Indo-Pakistan war. [9] The story is about an executive naval officer of the Indian Submarine S21[10] and his team, who remain underwater for 18 days.[11] The film explores the mysterious circumstances under which the PNS Ghazi sank off the coast of Visakhapatnam in 1971. [12] It is an underwater tale of the courage and patriotism of the men aboard the Indian Submarine S-21 who destroyed the Pakistani submarine PNS Ghazi when it ventured into Indian waters to destroy the INS Vikrant.