Space City Sigma is the first ever made Indian science fiction show. This show was launched by DD National Channel on 21st May 1989. Sigma is a space city which is running on fusion energy and is docked on the Galactic frontier. It is the last stand for the humans against the technologically advanced race of aliens who are ruled by Zhakhakoo. The story starts when a strange and deadly creature boards the human galactic ship. It is shown that it is the latest tactic of Zhakhakoo to defeat Commander Tara and take control over the city. Commander Tara’s city is the last obstacle for Zhakhakoo and his plan to add earth to his astronomical kingdom and the universe. For his latest quest to conquer the city Zhakhakoo has sent a Blob for the mission.
Blob is a strange creature resembling a thump of cow-dung or smelly wet upla. The Blob jumps on unsuspecting target and sucks all the life force out of them. Blob has the ability to kill any person whom he touches. He starts killings innocent people of the space city. The people of the city are unable to find the reasons for the deaths. The word of the deaths, spread through the city like wild fire and causes mayhem and chaos throughout the city. Through this chaos, Blob is able to get close to Shakti who is the head of security of the city. Shakti falls into the trap created by Blob thus giving Blob and opportunity to attack Shakti. Blob uses his power of killing people and attach himself on Shakti’s face. Blob uses all his strength to make sure that Shakti is killed, and Shakti too looks like on the verge of dying himself. There is a struggle between the two to defeat each other in the battle.
As the battle continues, it is shown that Blob in eager to kill Shakti forgets that he is a cyborg and Blob has attached himself to the metal side of his face by which it is impossible to kill Shakti. Before Blob realises his mistake Shakti overpowered Blob. Blob has no chance of standing against Shakti. Shakti uses all his strength and kills Blob and saves Sigma space city. The news of Blob’s failure reaches the ears of Zhakhakoo and he gets frustrated at the fact that he gets defeated again. The cast of this series are: Krishankant Sinha as Commander Tara the leader of Sigma Space City, Sanjeev Puri as Shakti who is a cyborg and the head of security, Savita Bhatia as Heeri who is the communication officer, Mita Vasisht as Teeba who is a scientist, Anand Sharma as Dr. Luka who is the doctor, Shailendra Srivastava as Zakhaaku the main antagonist of the serial, and Mukamba, Zakhaakoo’s assistant.