The Secret Train Beneath The Castle

This free illustrated story follows Zarja and Fran on a hidden train beneath Ljubljana Castle. Crystal caves, an underwater tunnel, and a mermaid guide their magical adventure home.

mermaidsadventuremagicfriendshiptrainsBedtime storyCourage and curiosity work best togetherAges 4–73 min read
Two children sit on a blue train seat as a mermaid holds a glowing shell outside an underwater window filled with fish and sea plants.
Two children crouch beside a tiny arched door in a sunlit stone castle courtyard.

In Ljubljana Castle’s sunny courtyard, Zarja knelt by the low stone bench and spotted a tiny arched door in the wall. Beside her, Fran crouched and pointed at little tracks curling across the flagstones. “Where do they go?”

Two children stand in a lantern-lit stone passage beside a small purple and gold train.

Zarja pushed the tiny door open, and warm lanterns lit a narrow stone passage. At the end, a jewel-bright train waited on little brass rails. Fran gazed at it in wonder. “All aboard!”

Two children sit in a blue train carriage with star-decorated windows and glowing ceiling lamps.

Fran and Zarja climbed inside and settled onto the velvet-blue seats. Starry windows sparkled as the lamps glowed, and the little train began to hum. “We’re moving!” cheered Zarja.

Two children look through a star-shaped train window at purple crystals in a cave.

The train rolled into a huge cave beneath the castle. Crystals hung from the violet-gray walls like frozen stars, and glittering specks danced in the air. Fran and Zarja stared, amazed.

Two children look through train windows at an underwater scene with a dolphin, fish, coral, and seaweed.

Beyond the cave, the train slipped into a clear glass tunnel beneath the sea. Blue water shimmered on both sides as bubbles floated past Fran’s window, while Zarja watched swaying seaweed and coral.

A mermaid holding a glowing shell floats outside a train window as two children watch.

A smiling mermaid swam beside the train. “I’m Mira,” she called, holding a glowing shell toward colorful fish. Zarja waved, and Fran leaned close to the glass to see its soft aqua light.

Two children watch a mermaid, sea turtle, octopus, and colorful fish through the train window.

Mira guided them past a slow sea turtle, darting fish, and a graceful octopus. Fran pointed in amazement, while Zarja grinned at the twisting arms. The glowing shell sparkled beside Mira.

A small train approaches split tracks underwater while a mermaid holds a glowing shell nearby.

Soon the train slowed at a coral crossroads. Two rail paths split beneath waving seaweed, but the dim blue water hid the way back. Zarja studied the tracks, while Fran looked uncertain and Mira lifted her shell.

Two children and a mermaid look at a glowing curly pattern on the underwater ground near train tracks.

Then Fran spotted a faint curly pattern beside the dim path. It matched the curls around the castle door! Zarja smiled bravely. “Let’s follow what you noticed,” she said, as Mira held the glowing shell close.

A mermaid holds a glowing shell beside illuminated train tracks as two children stand nearby.

Mira stretched out her glowing shell, and aqua light curled along the dim rails. Fran grinned proudly as Zarja raised a happy hand; the train rolled onto the shining path.

Two children wave from a train window as it travels through a crystal cave.

The train hurried through the glittering cave beneath sparkling crystals. At the watery tunnel’s edge, Zarja and Fran waved goodbye to Mira’s distant blue glow.

Two children stand together in a sunny castle courtyard beside a stone doorway.

Back in Ljubljana Castle’s sunny courtyard, Fran and Zarja stood proudly beside the tiny door. They shared a warm smile as it clicked shut, keeping their wonderful adventure safe inside.

Make your own story like this

Create a personalized, illustrated story where your child is the hero.

Make your own story in your browser Download on the App Store

This story was made with StorySafari's AI story maker for kids.