Pop the bronze balloon

"Kia Krumpet and her team of young inventors embark on the Swirl and Spark Creativity Tour, the highest level of the Piedmont Challenge. To solidify their spots at the Piedmont Inventor's Prep School once and for all, they're challenged to create a final life-changing invention with Team France and Team Switzerland. Everything changes when the Crimson Five stumble upon a hidden invention with a secret and discover that someone else is pulling the strings in the competition. In order to save Piedmont, and the futures of all kids with big dreams around the world, Kia, Ander, Mare, Jax, and Jillian must find a way to unlock the invention and lead a new connected team, the ultimate test of imagination and teamwork"--Provided by publisher.