One sunny day, Tim, Bella, and Max were playing in the park. They loved to play hide and seek.

Tim found a strange old tree. 'Look at this!' he said. It was big and had a door.

Bella touched the door. 'It's a portal!' she said. They opened the door slowly.

Whoosh! They were in a new world. 'Wow, so magical!' Max said. Colors were bright and strange creatures roamed.

'We need to help this world!' said a small fairy, flying over to them. 'Can you solve the three riddles?'

'The more you take, the more you leave behind. What am I?' asked the fairy. They thought hard.

'Footsteps!' said Bella. 'Correct!' cheered the fairy. They smiled proudly and waited for the next riddle.

'I'm tall when I'm young and short when I'm old. What am I?' asked the fairy. Tim scratched his head.

'A candle!' yelled Max. The fairy clapped. 'Great job!' They were ready for the last challenge.

'What has keys but can't open locks?' The friends looked at each other, puzzled.

Tim grinned. 'A piano has keys!' 'You did it!' The fairy did a loop in the air.

The world shined brighter. 'Thank you, friends!' said the fairy. Together, they had saved a magical world.