Follow the Rules

Nicky is a generally well-behaved child who completes his chores and takes care of his brother, Joey. However, he sometimes struggles with following rules set by adults, which he finds unfair. One day, while his mom is busy, Nicky plays soccer indoors, accidentally hitting Joey with the ball. This results in Joey getting hurt and Nicky facing punishment. Through this incident, Nicky learns the importance of following rules to prevent harm.

What did Nicky do when his mom was busy in the kitchen?

What lesson did Nicky learn at the end of the story?