Complex sentence: Kaala Saaya (the kingpin of the villains) had planned to assassinate him, because he believed that Dr Om Swaroop had the potential to actually fail his invasion of the earth.Dr swaroop had invented G-Gun with which parajeevs can be killed.
Split into simpler sentences: Kaala Saaya (the kingpin of the villains) had planned to assassinate him, because he believed that Dr Om Swaroop had the potential to actually fail his invasion of the Earth. Dr Swaroop had invented G-Gun with which parajeevs can be killed.