Caillou was excited to go to school. He loved playing with the building blocks in the classroom. Today, he wanted to build the tallest tower ever! His friends were also excited to see what he would create. The teacher smiled as the children played happily.

While building his tower, Caillou saw a fire cloud outside the window. Curious, he wanted to see it closer and left the classroom without telling anyone. His teacher and friends didn't know where he went. They started to worry. Caillou realized he might be in trouble.

As Caillou wandered outside, he saw a snow and ice cloud forming in the sky. It looked magical but also very cold. He shivered and wished he had stayed inside. Suddenly, he heard his teacher calling his name. Caillou felt a mix of relief and guilt.

Caillou quickly ran back to his teacher. She hugged him and said she was glad he was safe. Caillou apologized for leaving without permission. His teacher explained the importance of staying with the group. Caillou promised to be more careful in the future and was happy to be ungrounded.