The poison waves

In this second entry in the Secrets of the Sky series, sister and brother Kiya and Kinjal are called upon once again to save the Kingdom Beyond Seven Oceans and Thirteen Rivers. A few weeks after the conclusion of The Chaos Monster (2023), the fourth grade twins find themselves being summoned by Princess Pakkhiraj, leader of the flying horses in the Sky Kingdom. She wants them to save the water pari, winged mermaid residents of Pari-desh, by finding the source of a mysterious problem that is affecting the water and the health of all its inhabitants. Because Kiya and Kinjal were able to save the bees of the Sky Kingdom, and thus the whole ecosystem, "since everything in the natural world was connected to everything else," Princess Pakkhiraj believes they can do it again. After some investigating, the twins track down the source of the issue, which is rooted in science and the impact of pollution, allowing STEM-focused Kiya to shine. Filled with jokes that lighten the seriousness of the central issues, this page-turning fantasy is a must-read. Many elements of the story are rooted in Bengali folklore, particularly the folktale collection Thakurmar Jhuli. Tang's delicate artwork shows both the kids' ordinary home in Parsippany, New Jersey, and the many wonders they encounter. A funny and engaging sequel that seamlessly meshes Bengali folklore and environmental justice. (author's note) (Fantasy. 8-12) Copyright (c) Kirkus Reviews, used with permission.