Thuppakki(2012)

Captain Jagadish, an intelligence officer in the Indian Army, returns to Mumbai for a vacation but soon finds himself in a deadly mission. After witnessing a bus bombing, he uncovers a network of sleeper cells planning multiple attacks across the city. With no official backing, he embarks on a personal mission with his trusted comrades to eliminate the mastermind, ensuring the sleeper cells remain leaderless and trapped in silence, waiting for orders that will never come. Ready to sacrifice his own life, he sets out on his final mission—but does he succeed, and at what cost?