One day, a little crab named Tim found a big shell. Tim was very happy because he needed a new home. He tried to resist his excitement, but he could not. He wanted to show his new shell to his best friend, Sam the fish. 
Tim said, "Look, Sam! I found a new shell. I am so grateful for this new home." Sam looked at the shell and said, "Be careful, Tim. That shell looks very old and weak."
Tim did not listen to Sam. He went inside his new shell and started to play. Suddenly, the shell broke into pieces. Tim was sad and scared. He wished he had listened to his friend. Now, he had no home and he learned a lesson to always listen to his friends.
