We are in 2095, the Klingor Empire strikes Earth with elemental-photonic weapons. If the photons reach the Red Frontier, the Earth's atmosphere will be contaminated for centuries and millions of people will die. The percentage of destruction is proportional to the atomic number of the elemental-photon. It is estimated that if 50% of the earth's atmosphere is polluted, life would not be possible in the blue planet.
Alone, in an interceptor space ship, you must volatizer the Klingor photons using the laser that is activated by pressing the appropriate button on the weapons console. The big problem is that Klingor previously erased data from the radar-detector. You must do so guided by your intuition and on a esplendid knowledge of the periodic console