"Hey Milli, are you there?" Sarah called, stepping into the room. But there was no sign of Milli.

That morning had started off rough. Milli had been in a terrible mood, throwing tantrums at everyone in the house. No one had escaped her storm—except when Sarah finally snapped. When Milli accidentally broke her science model, Sarah shouted back at her in frustration. That was the last anyone saw of Milli.

Now it was evening, and Sarah had searched every room, every corner, even under the beds. Nothing. Milli had simply vanished.

Panic settled in Sarah’s chest. Before heading to the village that afternoon, she had promised her mother, "I'll make things right with Milli." But how could she keep that promise now?

Without wasting a second, Sarah hurried outside to the spot where Milli usually hung out with her best friend, Rose. As she approached, she saw Rose standing alone.

"Hello, Sarah! Have you seen Milli? I've been calling her all day—no answer!" Rose shouted.

"No... she's been gone all day," Sarah said, worry creasing her brow.

The two girls joined forces, scouring the streets, parks, and nearby shops. Still, Milli was nowhere.

The next morning, desperate and tired, they went to the police station.

"Kids and their pranks," the officer scoffed. "It's not April Fools’ Day!"

Left with no help, Sarah and Rose decided to keep searching on their own. By afternoon, they sat in a small café, sipping juice and staring blankly at the table.

“I regret shouting at her... Oh, what have I done? What will I tell Mama?” Sarah whispered, eyes brimming with tears.

Rose placed a hand on hers. “No, Sarah. You did your best. And we won’t stop looking. I just hope my foolish friend hasn’t gone too far.”

That evening, back at home, the girls entered Milli’s room again. Rose absentmindedly touched things on the desk while Sarah leaned against the wall, tired and lost in thought.

Suddenly—a flash!

Sarah disappeared.

Rose gasped. “Sarah?!” Her heart pounded as she ran to the wall. A strange shimmer rippled over it. Taking a deep breath, she jumped in too.

"Ouch!" Sarah groaned, rubbing her head as she opened her eyes. But then she froze.

They were sitting in a field of soft, glowing grass. Birds chirped sweet melodies, and a lake shimmered like it was made of stars.

And there, by the edge of the lake, sat Milli.

“Milli!” Sarah cried.

Milli turned, startled, then ran into her sister’s arms. “You found me!”

“Look at this place,” Milli whispered, wide-eyed. “Everything here is... extraordinary.”

Just then, Rose appeared, panting. “Milli! There you are! We've been looking for you for days!”

Milli looked confused. “Days? I just got here... I think. Maybe an hour or two?”

Sarah blinked. “Milli, how did you even get here?”

“That day, after you yelled at me... I was so angry. I stormed into my room and started hitting the wall. Then... I fell through. And I didn’t want to come back.”

But they did come back. Eventually.

The strange wall became their little escape, a hidden spot where they could laugh, cry, or simply be. It was their secret, their safe place—a hidden world discovered through emotion, love, and the unexpected magic of sisterhood.