The Water Stone: Book Two of The Reign of the Elements by Riley Carney

After successfully recovering the Fire Stone, fifteen-year-old Matt wants nothing more than to enjoy himself with his friends in the magical forest of Amaldan, home of the elves. But Matt knows that the evil elf Malik will never stop seeking the Stones of the Elements. And when a plague from ancient years resurfaces, threatening the lives of an entire city, the only way to ensure their survival is to find the second Stone of the Elements, the Water Stone, which possesses mysterious magical healing powers. Matt, Samsire, and their friends, set off on another quest, following the clues of a long-dead dwarf adventurer, as they desperately race against time and Malik’s forces to find the Water Stone before it’s too late.

This is the second book in the riveting Reign of the Elements series, an adventure story brought to life by memorable, vibrant characters. Rooted in genuine adolescent thought and emotion, it is a journey of courage, friendship, and danger as a group of teenagers attempt to save their world.