After being taught in a boarding school run by whites that Navajo is a useless language, Ned Begay and other Navajo men are recruited by the Marines to become Code Talkers, sending messages during World War II in their native tongue.

After he feels a mysterious pull drawing him toward a dark, shadowy pond in the woods, Armie looks to old Native American tales for guidance about the dangerous monster lurking in the water.

Although he is the littlest student in his class, thirteen-year-old Baron Braun calls upon the strength and wisdom of his Mohawk ancestors to face both man and beast when he tries to get help for his classmates, who are being terrorized during a school field trip in the Adirondacks.