Place the crate. Aim the fan. Open the portal. What could go wrong? Captain Cubemelon thought the first build would be easy. Set the spring pad. Press the button. Save the scene. But when Pip Pop bounces through an unfinished portal before the team can lock the build, the first test becomes the first rescue. To bring Pip home, Captain and his team, Ember Slice, Patch Bolt, Drip Byte, Moss Guard, and Brick Bloom, must turn a messy lab into a working path before the portal forgets where Pip went. Every fix uncovers a new rule. Every failure teaches them something the bible never said. In the Gadget Sandbox, mistakes are supposed to be fixable. This one may not be. The first book in The Gadget Sandbox Chronicles, a six-book adventure series for ages 10 and up. Perfect for kids who love building games, puzzle-solving, team-friendship stories, and the moment a plan finally works. Includes a complete Sandbox Glossary covering characters, gadgets, mechanics, and the team's first official rule.