Set in Tumbbad in the 1920s, the story revolves around the three generations of a family facing the consequences when they build a temple for the first-born of a goddess, named Hastar–he who must not be worshiped. Hastar is a terrible entity who can curse a person yet also can grant gold coins. And the story put emphasis on human nature and the never ending greed. The myth of Hastar is, when the Goddess of Prosperity created the world she gave birth to Hastar followed by 16 Crore Gods and Goddesses. Hastar being her first born was her favorite child, but Hastar was very greedy. When the Goddess of Prosperity offered Hastar the ownership of all the gold in the universe or all the food, he took the gold as well as tried to take over the food in his greed fighting with his brothers and sisters. The 16 crore gods and goddesses overpowered Hastar and when they tried to kill him, the Goddess of Prosperity intervened and begged for his life. The 16 crore gods and goddesses accepted her request on one condition, that Hastar will never be mentioned in the Puranas nor he should be ever worshiped.