Yuta's teacher gives him a photo of the desert near the Dunhuang Caves in China. As Yuta daydreams about finding the treasures of the caves, he is miraculously transported there. However, the treasures he discovers are way beyond what he had imagined.

When the spring that supplies water to her kingdom dries up, the Princess decides to go into the desert in search of a faraway oasis that is said to exist. The Princess and her animal friends face many challenges in their journey to save the draught-stricken kingdom.

Sometime in the future, the world was completely dried up and became all desert. They had little rivers and lakes left, which villians and dangerous animals lived. Water has become the most valueable thing on the world. Whoever can control water will rule over the world.

Set in the "Train World" where all citizens are trains. However, among the residents there are special trains that can transform into robots, the Robot Trains. Featuring our 5 train heroes, with special powers: Kay, Alf, Duck, Selly and Victor - and their exciting adventures. Can the Robot Trains save the village from the evil dark forces that be?