Sam has a red wagon and a whole yard full of things to discover. When Sam begins pulling the wagon across the grass, he finds a ball, a stick, and a leaf to carry along the way. With help from his friend Lee, the wagon fills up with treasures from their day of play. But when they try to add one thing too big, the wagon tips over! Together, Sam and Lee learn how to fix the problem and keep their adventure rolling. Sam and the Red Wagon is a gentle beginning-reader story filled with repetition, simple vocabulary, and warm watercolor illustrations that build confidence for new readers while celebrating friendship, curiosity, and everyday discovery.