How did a gem can take a vengeance on people? The Moonstone isn’t an ordinary gem. It’s a sacred gem which being kept carefully in a sacred temple in India. It’s very important for the Indian, and if the gem is stolen, the priest of the temple will hunt down the perpetrator to get it. Moreover, it is said that the gem is cursed and will bring misfortune for the keeper and his/her descendant and family.

The story of the Moonstone has reached the British troops in India and one of them named John Herncastle take the risk to steal it. He has stained his hands with blood of the priest temple to get the gem and after that he lives his life miserably until he died. He died in London, but the gem has been ordered to be gifted to his niece on her birthday.

Rachel Verinder is the birthday girl and Franklin Blake is the person who is given the task to give the Moonstone to her. Franklin Blake likes Rachel and so does her even though she has been paired with Godfrey Ablewhite. Rosanna Spearmann, a housemaid in Verinder’s household, likes Franklin Blake. Everything seems to be okay. Their feelings are kept only in the heart, until the Moonstone is vanished. Everyone is in distress.