The coordinates of an old satellite from India, Mihira, are lost with the potential for it to wreak havoc with communications worldwide. Astronaut Dev’s life was turned upside down five years ago and he now teaches science at a government school. He’s brought in to fix the satellite but is that the only reason he agrees to come back?

A Pakistani submarine, Ghazi plans to secretly attack Vizag port. For doing so, it has to get past Indian submarine S21.