That afternoon, tiny raindrops fell on the windows, and Ziggy, Lily, Skye and Dash were all together in the living room of Ziggy's house. Outside, the sky was gray like a little mouse, and inside it was warm and cozy. The four friends had built a track for their marbles using the couch cushions, and the marbles rolled down with a happy sound: "Trrr, trrr, plink!".

"My red marble is the fastest in the whole world!" shouted Dash, who always loved races.

"My blue one will beat it for sure," said Lily, sure of herself, her blue eyes sparkling.

Skye, calm and quiet, rolled her yellow marble slowly, and smiled. All around them wandered Ziggy's four cats: Sofia, the cuddly little black kitten, Dora the brave tabby, and the two brothers, Poldo, nice and chubby, and Milo, tall and jumpy.

All of a sudden, Dash's red marble zipped away and rolled under the couch, disappearing into the dark.

"Oh no! My marble!" said Dash.

Ziggy, who was thin and quick, flopped down on his tummy on the rug and stretched his arm under the couch. His fingers touched something soft and dusty. It wasn't the marble. It was something bigger.

"Wait... there's something under here!" said Ziggy. He pulled hard, and with a little "poof!" of dust, out came an old teddy bear. His fur was a little patchy, one ear was crooked, and he had a button where one eye should be.

"A teddy bear!" said Skye softly, coming closer.

And then something magical happened. The teddy bear blinked his button-eye and spoke in a shy little voice.

"Good day, little ones. What a wonder to see the light again. I was stuck under here for such a long, long time. Nobody played with me anymore... and I felt forgotten."

The children stared with their mouths open. Lily asked, "But what is your name?"

"I don't have a name anymore," sighed the teddy bear. "A teddy bear has a name only when a child loves him."

Skye stroked his head. "Then we will give you a name. And we will love you."

Right at that moment, a light fog began to drift in through the window, thin and soft like whipped cream. It came in slowly and filled the living room, and everything became fluffy and mysterious. The rug looked like a meadow of soft grass, the couch looked like a hill, and the window looked like a big open door to the world.

"How beautiful," whispered Ziggy, "it looks like a whole new place!"

And that was when, from far away in the fog, came a sound they all knew very well.

"CHOO-CHOOO, CHOO-CHOOO!"

"Toby! Toby the Magic Train!" the children shouted together.

Out of the fog came Toby the Magic Train, with his colorful cars and puffs of smoke that made little clouds. He stopped next to the couch-hill and greeted everyone in rhyme:

"Choo choo, little friends, what a joy here to find you!
I've chuffed through the fog just to ride here beside you.
A puppy is lost, and he's crying, so blue:
one step at a time, and he'll find his way through!"

"A puppy who's crying?" said Skye, her heart already touched.

Just then, from the fog, came a tiny sound: "Wah... wah... waaah..." It was a whimper. A puppy had gotten lost and couldn't find his mom.

"We have to help him!" said Ziggy. Then he looked at the teddy bear. "Are you coming too?"

The teddy bear squeezed his little paws, a bit scared. "I... I am old and dusty. I don't know if I can do it."

"Of course you can," said Ziggy with a big smile. "You just take one step at a time. Hop on!"

They all climbed onto the magic train. Toby whistled and set off slowly into the fog. The living room had become a whole world to travel across.

They crossed the meadow of the rug, where the soft threads looked like tall grass. Then the train stopped at the foot of the couch-hill.

"The whimper is coming from up there, from the top!" said Lily, pointing up high.

But the couch-hill was steep and smooth. How could they climb it? The children tried to scramble up, but they slid back down laughing: "Whoops! Ha! Plop!"

Skye stopped, worried. "It's too high. We'll never make it."

That was the moment Ziggy's eyes went wide. An idea had lit up in his head, like a light bulb.

"Aha! I have an idea!" he shouted. "Look at the cushions! If we stack them one on top of the other, like steps, we can climb up one step at a time!"

"One step at a time!" repeated the teddy bear, and for the first time he smiled.

They got right to work. Ziggy thought, and his body did. He took the first cushion and pushed it against the hill. Then he jumped on top of it with a leap. Milo, the jumping cat, jumped beside him to show the way. Lily passed him the second cushion, Ziggy pulled it up with his arms, and climbed on. Then the third. With each cushion, a step. With each step, one step higher.

"We're doing it!" shouted Dash, quick as ever, carrying the cushions at full speed.

Cushion after cushion, the staircase grew taller. Ziggy jumped, climbed, and balanced with his arms spread wide like a tightrope walker. A tightrope walker is someone who walks up high without falling, like in the circus. "Look! I can stand up straight!" laughed Ziggy, swaying just a little. At one point a cushion wobbled and Ziggy made a quick little hop to the next one: "Whoop!" He almost fell, but he held on tight and didn't let go. "Slow and careful," he said. "One step at a time." And he pulled his friends up one by one. Even the teddy bear climbed, shy at first, then braver and braver, until he reached the top with one last leap.

"I did it! I made a jump! Me!" said the teddy bear, and his button-eyes sparkled with joy.

At the top of the couch-hill, inside the soft fog, they finally found the puppy. He was small and brown, with floppy ears, and he was shaking all over.

"Wah... I lost my mommy," he whimpered. "It's all foggy and I don't know where to go."

Skye knelt down beside him and hugged him tight. "Don't be afraid. We're here now. We'll take you back to your mom."

"But how will we find her in the fog?" asked Lily.

Ziggy thought about it. Then, again, the light bulb. "Aha! The puppy knows his mommy's smell! And also... the cats! Cats can sense everything! Dora, Sofia, help us!"

So they did it this way, one step at a time. The puppy sniffed the air. The cats perked up their ears and tails. And every time they sensed something, they took one little step in that direction, into the fog. One step. Then another. Then another.

"This way!" said Ziggy, and hopped ahead.

"No, wait, that way!" said Lily, not giving up, when the whimper grew louder.

And so, step by step, they followed the sound and the smell all the way to the far end of the fog, near the window-door to the world. And there, waiting, was a big sweet mama dog, searching for her little one with eyes full of hope.

"Mommy!" barked the puppy, and ran to dive between her paws.

"My little one! I looked for you everywhere!" said mama dog, licking him all over. Then she looked at the children. "Thank you, little friends. You have big hearts."

Skye's eyes were a little teary, but it was a happy cry, the kind that makes you smile. The fog, slowly, began to clear, and the living room went back to being the same old living room, warm and safe.

Ziggy picked up the teddy bear in his arms. "You know what? Today you were brave too. You jumped, you climbed, you helped us. Do you want to stay with us? We will love you forever."

The teddy bear trembled with happiness. "Really? Then... then do I have a name again?"

"We'll call you Cloud," said Skye, "because we found you on the day of the fog."

"Cloud," repeated the teddy bear, and he never felt forgotten again, never ever.

"CHOO-CHOOO, CHOO-CHOOO!" Toby the Magic Train was ready to take them home. The children climbed aboard, with Cloud held tight in their arms, and Toby said goodbye in rhyme:

"Choo choo, what a trip, what a wonderful ride!
one step at a time, and no fear left inside.
The small and the slow, if they try, they can fly,
and go oh so far... like our Cloud, by and by!"

The train ran gently through the last of the fog, and in a moment they were back on the living room rug, with the marbles still there and the light rain on the windows. But now there was one more friend: Cloud, the teddy bear who had found love again.

Skye hugged him. Dash even found his red marble again. And everyone learned something sweet: that even when something seems too big, too high, or too far away, you can reach the end. You just have to begin. You just have to take one little step. And then another. One step at a time.