That morning the sky was covered with big, soft clouds, like fluffy cotton balls resting on top of the roofs. It was not hot and not cold: it was a warm day, perfect for being outside. Skye, Ziggy, Lily and Dash were in the meadow behind the house, pretending to be brave explorers. Ziggy had put a leaf on his hat, Dash ran back and forth looking for hidden treasures, Lily looked under every stone with her blue eyes, and Skye walked slowly, listening to the little sounds of the meadow.

"Hush a moment," said Skye in her sweet voice. "I hear something coming."

From far away, through the grass, a happy sound came closer: "CHUFFFF CHUFFFF!". It was Toby the Magic Train, with his colorful cars and smoke that smelled of sugar. He stopped in front of the children, blew his whistle and said:

"Hello, little friends with hearts so kind,
hop aboard and leave the day behind!
I'll take you far where the wait was long,
to a sleeping place with a small sad song."

The children looked at each other, intrigued. A sad song? What did Toby mean? But the little train smiled reassuringly, so they all climbed aboard. Toby set off gently, passed through the cotton clouds and, after a while, stopped in front of a big honey-colored castle, with very tall towers and a huge wooden door.

The four friends got off and looked around with their mouths open. The castle was beautiful, but there was something strange. Everything was still. Above the tallest tower there was a great clock, and its hands always pointed to four o'clock, frozen, motionless. The garden in front of the door was gray and withered, without a single flower. And there was not even one butterfly, not one.

"How quiet it is," whispered Lily. "It's like the castle is sleeping."

A light wind rose and passed through the dry leaves, making a delicate sound, like a whisper. It almost seemed as if the castle wanted to speak, but could not find its voice.

"The wind is trying to tell us something," said Skye, listening carefully. "Let's go and see."

They went into the castle on tiptoe. Inside there were long hallways, stairs that climbed and turned, and many little doors. Dash, who was fast, ran ahead and found a tiny door hidden behind a dusty curtain.

"Look here!" he shouted. "A secret room!"

They opened the door gently. Inside, in a corner, there was an owl. A small owl, with two little round glasses resting on his beak. As soon as he saw the children, he hid behind his wings and held tight a small glass hourglass, the kind with sand that trickles down slowly.

"Don't... don't be afraid," said the owl in a tiny voice. "I'm the one who is a little afraid of you."

"Hello," said Skye, coming closer without hurrying and sitting down on the floor, to be at his same height. "I'm Skye. What's your name?"

"I'm the Wise Owl," he answered very quietly, peeking out from behind a wing. "I can answer any question about flowers and butterflies. But I live here all alone, in this sadness."

Ziggy tilted his head to the side. "Sadness? What is sadness?"

The owl sniffled with his beak. "It's that sweet sadness when you miss someone very much," he explained. "It doesn't hurt like a scraped knee, but it weighs a little on your heart."

The children nodded slowly. Now they had understood a new word.

Skye looked at the frozen clock she could glimpse through the little window. "Owl, why has time stopped here? Why are there no butterflies?"

The owl lowered his eyes. He trembled a little. For a moment it seemed he did not want to answer. Then, with a voice that cracked, he said: "It was me who stopped the clock. A long time ago, my best friend, a blue butterfly, flew away on his long journey. That day we were happy together, laughing in the sun. I did not want that moment to ever end. So I climbed up the tower and stopped the hands at four o'clock, the hour when he was still here."

Skye felt a little squeeze in her heart. "And then?" she asked gently.

"And then," the owl went on, "if time stops, spring never comes again. The flowers stopped blooming. The garden turned gray. And without flowers, the butterflies never come back. I know how to make everything bloom again, I know it very well. But it's too big a job for me alone, and I... I'm too shy to ask anyone for help. I'm afraid of being a bother."

Lily clenched her fists, stubborn as always. "But we are here!"

"We can help you, come on!" bounced Dash.

The owl huddled even deeper into his wings. He wanted to say yes, but the words stayed frozen in his throat, just like the hands of the clock.

So Skye did a simple thing. She said nothing. She sat down beside the owl, in silence, and gently rested a little hand on top of his wing. They stayed like that, close together, while outside the wind whispered softly.

"You know," Skye finally said, "asking for help is not a thing for the weak. It's a thing for the wise. And you're a wise owl, right? The people who love us are happy when they can lend us a hand. You don't bother them. You make them glad."

The owl looked at her through his misty glasses. He took a deep breath. His beak was trembling. And then, in a tiny, tiny whisper, but a brave one, he said the hardest words of all:

"Will... will you help me?"

As soon as he said it, something magical happened. From the tower clock came the faintest sound: "tick". Just one tick, but after so much silence it sounded like a thunder of joy.

"Did you hear that?" said Skye, her eyes sparkling. "Time wants to start again. Come on, let's get to work!"

They all went out into the gray garden, and the owl, finally less shy, began to give instructions in his wise voice. "Here we need the seeds of the sweet-smelling flowers... over there a little fresh water... and the high branches must be cleared of dry leaves."

At first, though, it seemed it wasn't working. The children worked and worked, but the earth stayed gray and no sprout came up. Dash sat down on the ground, a little discouraged. "What if we can't do it?" he said in a tiny voice. "What if the garden stays dull forever?"

For a moment everyone stayed quiet. Even the owl lowered his wings. But Skye looked around, breathed slowly and said: "A flower doesn't bloom right away. It takes care, and it takes patience. Let's not give up right now." She took a handful of seeds and showed them to her friends. "Let's start again together. One at a time."

Those words gave everyone courage. Dash jumped back up, Lily clenched her fists, and they went back to work more united than before.

Everyone did their part. Lily, strong and determined, moved the heavy stones that covered the good soil. Dash, fast as lightning, made big jumps to reach the highest branches and clear them. Ziggy ran to bring water from a little fountain, back and forth, without ever getting tired, and along the way he invented funny ways to water more flowers at once. And Skye, calm and careful, took care of every little sprout, covered it with soft soil and whispered to it: "Grow, grow slowly."

The owl watched them and, for the first time in a long time, he smiled. As the children worked, the garden changed color. A yellow flower came up. Then a red one. Then many, so many, of every color, as if someone had switched on a thousand little lights.

And then, from the sky, came the first butterfly. Then another, and another, until whole swarms flew lightly among the flowers. The wind stopped whispering sadness and began to carry a sweet scent all around. And the tower clock, with a lovely "tick tock, tick tock", finally started walking again.

But the most beautiful moment was still to come. While the owl stood still, watching all that wonder, a blue butterfly floated down slowly from the sky and landed right on top of his little round glasses.

The owl held his breath. His eyes filled with tears, but they were happy tears. "It looks like my friend," he whispered. "I have not forgotten him. I will always remember him. But now I have learned something: stopping time does not bring him back to me. Instead, if I let time keep walking, new and beautiful things come along. And new friends come along."

He looked at the four children, one by one. "Thank you. Thank you for coming. And thank you for teaching me to ask for help."

Skye gave him a sweet hug, and her eyes shone a little too, with that joy that brings a smile.

The castle, now, was full of life: the butterflies danced, the flowers were fragrant, the clock ticked happily. The Castle of Whispers had found its laughter again.

After a while the "CHUFFFF CHUFFFF!" of Toby the Magic Train was heard again, coming back to fetch them. The children said goodbye to the owl, who now waved with his wing held high, hiding no more.

Once on the train, Toby said:

"A shy little owl grew brave today,
and asking for help is the wisest way!
Now time can move and the flowers are here,
so home you go, little friends so dear."

And as the little train carried them home through the cotton clouds, the four friends smiled. They had learned that, when something inside us stops because of sadness, all it takes is telling someone who loves us. And everything, little by little, begins to bloom again.