"Chugga-chugga, chugga-chugga" — a train is just arriving. On top of a suitcase sits a colorful, brightly painted train gift box. Now, two trains are about to begin their journey west. Running along the tracks, the trains climb hills, pass through tunnels, cross bridges over rivers, push on through rain and snow, day and night, and sometimes even through clouds of dust — until the journey ends and it's time for a cozy bedtime. Our children's imaginations are endlessly wide and deep. Drawing on everything they've seen and heard, they let their imaginations branch out further and further. Of the two trains in this book, one runs on the power of a child's imagination. To a child's eyes, there's no difference between the journey of a real train — shiny and fast — and an old, slow toy train. It's just like how a simple wooden stick can become a magnificent conductor's baton or a legendary sword like Excalibur. This is a picture book where poetic sentences and clean, charming illustrations come together beautifully. With two trains alternating page by page, parents and children can create endless stories together. The two little trains have reached the hill, a tall, great hill stretching to the west. The two little trains go chugga-chugga toward the west, running straight into the hill. Look inside, look inside, into the long, dark tunnel — a long, dark tunnel leading west.