The sky had started wearing the sheet of darkness, descending into twilight. The birds started returning to their nests. The moon was full in the sky which was going to be engulfed soon in darkness, for it was the night of eclipse.

In a world, away from the human world there was a huge mansion. In that mansion, in a room, there was a teenage girl who was stuffing things in a duffle bag. A young girl of about 10 years came running in the room. "Koyal didi! Koyal didi!" The teenage girl—Koyal—turned to her and smiled, "Anvi, what are you doing here, dear?" Anvi sat on the bed beside the duffle bag, "Papa said that you two are going somewhere. Where are you going?" Koyal closed the bag and said, "we are going to Manulok." Anvi began swinging her legs and said, "but why?" Koyal sat beside her younger sister on the bed, "will listen to a story?" Anvi nodded with eagerness. Koyal smiled and said, "maa told me this story when I was your age. I am telling you this now." Anvi's eyes gleamed with excitement to finally know something about her mother.

Koyal started, "There are two types of Vishkanyas. First are the ones that humans create. Young girls are fed snake poison in slow doses since childhood making them into lethal weapons. They are used for assassinations. The second one are the ones that are born with poison in their veins."

Anvi chirped in, "like us?"

Koyal chuckled, "yes. Like us. We are Vishkanyas by birth and we have our element's powers. The Vishkanyas created by humans do not have it. And they don't reside in Vishlok along with us."

The curious child asked again, "where do they stay then?"

Koyal replied, "they stay with the humans in the Manulok."

Anvi asked with confusion, "if there are already Vishkanyas in Manulok, why are you going there?"

Koyal smiled, "there were total five Maha-vishkanyas. The royal family are the descendants of maha-vishkanya Chandralekha—the ones with the powers of sky. While, we are the direct descendants of one of the maha-vishkanya, Salila—the ones with the powers of water. And there are other three direct descendants of the remaining three maha-vishkanyas. Every month, one of us are given the task to protect the treasure at the Tara Devi temple in Manulok and a minister and his wife goes to fulfil the task. This month it's our duty and since maa is not here, I am going with papa."

Anvi asked innocently, "can I come too?"

Koyal replied, "no, dear. You are still a child." Seeing Anvi's saddening face, she continued, "you can go with papa when your elemental powers have activated. Okay?" Anvi nodded with an eager smile.

"If the sisters have done bonding, shall we leave?" A voice said from the door. As the sisters turned, they found their father—Amit—standing at the threshold. Koyal smiled and nodded at her father, then turned to her sister and said, "bye. Take care of yourself." Anvi nodded. Koyal went past her father in the hallway.

Amit looked at his younger daughter, who already looked almost like the spitting image of his late wife, and said, "don't stay up late, okay?" Anvi replied in a sing-song tone, "yes, papa." Knowing that his daughter won't be sleeping early, Amit just shook his head and went downstairs to join his elder one.

Five men—five human men—were standing outside the Tara Devi temple. One of the men—Prakash—asked, "how will we get the treasure? Vishkanyas must be guarding it." Another one—Pankaj—looked up at the sky. The Earth's shadow had completely fell on the moon, turning it into striking red. Pankaj said, "today is lunar eclipse. The Vishkanyas' power will be very less on this day. We can easily overpower them." Another one—Vinod—said, "are you sure, brother, we should do this?" Pankaj replied, "of course, we should. We want the money. We will get it with the treasure."

All five of them went inside the temple. The father and daughter were already present there. Amit was near the temple doors while Koyal was lighting an oil lamp at the feet of Tara Devi's idol. They both turned at the sound of the doors opening. Both were shocked seeing the men as it was almost midnight. Amit, who was nearest to them, said, "the temple is closed right now. Please, come back tomorrow morning." The man, as though had not heard him, kept coming near him and stood right in front of him. Koyal, sensing something was wrong, repeated her father's words, "please, come back tomorrow. The temple is closed now." Two men—Prakash and Vinod—started going near her. Before Amit could say something, he screamed and started coughing blood. As Amit looked down, he found out that he had been stabbed by the man in front of him. The man took out the knife and stabbed him again. On seeing this Koyal screamed, "papa!" To save her father, she started summoning her powers, but they were weak due to lunar eclipse and she was still not well trained. Before her powers could be summoned completely, Prakash and Vinod held both her hands. She started struggling to get out of their hold.

The other three men, came near her and Pankaj—who already had the dagger red with the blood of the Vishkanya's father—asked, "where is the treasure?" Koyal shook her head and replied, "no. I will not tell you." Another one of them—Rohit—went behind her and grabbed a fistful of her hair and pulled them. Pankaj again asked, "tell me! Tell me where the treasure is! Or you'll die with your father."

Koyal glared at him, "I don't care even if you kill me. I will never tell you the location of the treasure. Never!"

The fifth man—Naresh—said, "then, die." He gestured Pankaj, and Pankaj stabbed Koyal, making her gasp and cough. After stabbing her a few more times, they pushed her on the floor and started looking around.

After looking at every corner of the temple, Rohit cursed, "dammit! There is nothing here." Vinod agreed, "yes. But, now, we should leave before someone sees us here." Everyone agreed with him and left from there.

Anvi with her aunt and uncle came to the temple to give some food to the two already present there. As they reach the threshold, they froze. Amit was lying on the floor, his body pale and his kurta stained crimson. Anvi ran to her father and started shaking him with her small hands, "papa! Papa! Please, wake up. Please papa."

Her uncle—Ashok—came there and checked Amit's pulse. He looked at his wife, Pooja, and shook his head. Pooja gasped and kept her hand on her heart. While Anvi was sobbing continuously. She turned to her uncle and aunt, "maasi, maasa, please tell papa to wake up. Why is he not waking up?!" Pooja came to her niece and helped her get up. She said with trembling voice, "I am sorry, dear. He is no more." Anvi sobbed more as she heard the words. Then, she started looking around, "didi. Koyal didi. Where is she?" She found her sister lying on the stairs near the idol. She jerked her aunt's hands away and went running to her sister. "Didi! Didi wake up! You still have to teach me a lot. You promised you'll teach me! Please wake up!" She said shaking her sister's pale and lifeless body.

Pooja knew from just a single glance that the young vishkanya was dead. The poison has already left her body. She said, "Anvi, dear, her powers will soon go back to the waters. We will able to find out who did this to them before that happens if you try to connect with her powers." The child nodded, taking her dead sister's hand in hers. She was trembling as she closed her eyes, tears flowing non-stop.

After some time, as she opened her eyes, the sadness in her eyes was replaced by anger. By hatred. She whispered to her sister, "I promise didi, those men who did this to you, they'll pay for this." Pooja nodded, "yes, dear. They will pay for it."

"They will have to," Anvi said, her shrill voice trembling with anger, "I'll make sure they do, because I'll be the one who makes them pay. With their lives."

One life was taken. And another had found the purpose of hers—vengeance. Anvi had a sole mission in her life now, to make the killers of her sister and father pay for their act. She will do anything to fulfill it.