Eleven year-old superhero Wyatt Flynn and his little sister Adeline go to Camp Igneous, where they secretly explore a mysterious volcano which may be a key piece in the puzzle of what happened to their missing mother.

A hot dog named Dog and a chicken nugget named Nugget hope to have fun at summer camp, but things get sticky when fellow camper Dijon implements his evil plan.

In 1941, fifteen-year-old Lina, her mother, and brother are pulled from their Lithuanian home by Soviet guards and sent to Siberia, where her father is sentenced to death in a prison camp while she fights for her life, vowing to honor her family and the thousands like hers by burying her story in a jar on Lithuanian soil. Based on the author's family, includes a historical note.