Max the Glow Train and his friends learn numbers, shapes and colors while using educational chain reactions. Suddenly, Alex the Helicopter flies in and tells them that Bubble the Robot is stuck in a basketball hoop and needs help. The clever toys then decide to build a giant chain reaction set using toy cars, buses, 3d shapes, boats, dominoes, marbles, and even a toy train. With your help, Bubble the Robot is in good hands!