Can weather be controlled? If so, can it be weaponised? The USA set up HAARP in 1993 for research on weather modification. Its covert experiments caused unexplained weather changes like cloudbursts, tsunamis, floods, earthquakes, leading to massive destruction across the globe. Worldwide outrage finally forced the closure of HAARP. But the deadly experiments continued to ravage the world. Around the same time, a secret device is planted by a foreign mountaineering expedition in the Himalayas. It has the potential to change weather patterns in India. A team of Army mountaineers is sent to retrieve the gadget. But, will they be able to retrieve it before the damage is done? Will the intelligence agencies across several countries succeed in nabbing the culprits who are trying to weaponise weather? Decoding the feronia files is a thriller that takes the readers on an international roller-coaster ride to track the scientists carrying out experiments that could unleash a new weapon of mass-destruction—weather.