Secrets of Zynpagua: Serpent's Shadow is a sequel to the following books: -Secrets of Zynpagua: Return of the Princess (Book 1) -Secrets of Zynpagua: Search of Soulmates (Book 2) -Secrets of Zynpagua: Birth of Mystery Child (Book3) In the first book, Secrets of Zynpagua: Return of the Princess, Anika, the gifted princess of Zynpagua, impresses the stars and is able to rescue her mother, Sussaina, and her region Zynpagua from the evil clutches of Drudan the scientist. In book 2, Secrets of Zynpagua: Search of Soulmates, Drudan pledges revenge on Anika. He reaches the city of Kanyakumari and procures magical water from the confluence of the Bay of Bengal, the Arabian Sea, and the Indian Ocean and plans to kill Anika by uniting her spilt soul. In this journey, he meets a vicious mermaid and marries her. While he fails to harm Anika and Leo and gets captured, the mermaid kidnaps Anika's dear sister Radhika. That's when Venus appears and tells Anika that in order to save Radhika, Anika would have to find Pajaro, Leo's mother, whom everyone thought was dead. Venus also predicts that the mermaid would give birth to a powerful mystery child. In book 3, Secrets of Zynpagua: Birth of Mystery child, the mermaid kidnaps Radhika and swims towards the Pacific Ocean region. There she meets a dwarf who tells her that the demon planets were still ruling the sky in the west. The mermaid sings to the demon planets who bless her with a meteor shower. The demon planets bless the mermaid, and she gives birth to a gifted child who can bring disaster through his singing. He is uncontrollable and sends Sussaina, Leo, Vivian, Frederick, and Romeo to unknown places and lands. They are untraceable. In order to find them, the stars predict, "Discover the Serpent's Shadow that connects the land and ocean. That is the only option for an unthinkable solution!" Secrets of Zynpagua: Serpent's Shadow MerDan's song sends Vivian and Leo to the land of evil. The head of the evil world, Ita, is desperately searching for Pajaro. Vivian overhears that Pajaro has been given special powers to end evil in this world. Sussaina and Romeo are untraceable. On the other hand, MerDan captures Lady Carol and the birds through his song. Lady Carol tricks MerDan to call Radhika so that she is able to learn to control MerDan. Before Radhika is able to control MerDan, he sings and brings turbulence in the ocean. The only way left to control the evil world and MerDan is to find Pajaro!