Fifteen-year-old Mike would rather be traveling to the farthest galaxies of outer space than living under the shadow of his mother's serious depression or riding the subway into Manhattan each week to be analyzed by her shrink. In his travels Mike refuses to connect with anyone including his psychiatrist. But when an exuberant and irrepressible Herbie armed with a toy steering wheel climbs aboard Mike's train, all that changes. First embarrassed, then amazed, Mike watches as Herbie takes over the train's front window on his mission to deliver its passengers to their destinations. Seeing Herbie inspires Mike to break free, to look outside the window to the road ahead and take charge of his own life.