What is the summary of the tail by Joyce Hansen?

Tasha, a thirteen, almost fourteen, year old girl has to babysit her little 7 year old brother, Junior, because her mom is getting a job over the summer. Tasha really didn't want to. She would do anything but babysit Junior. Her mom gave Tasha a long list of rules. Junior basically only had one: he was to listen to his sister. Tasha was going to enter a double dutch contest, and she and her friend, Naomi, were hoping to win. Disobeying her mother's rule, Tasha left the block and went to the playground where she told her brother to go hiking in the woods, which was disobeying another rule, too. He didn't listen, but instead jumped in to his sister's jump rope contest and she fell. She told him to get lost, which he did. A scary big dog appeared in the playground later. Everyone was scared and someone was missing. Jared. Tasha was most scared of all. She was so brave. She went up to a tree, thinking it was a bear, as she tried to hit it with a stick. She fell and up above her was her brother, Junior, laughing at her. She found him. You don't miss a tail until you really lose it! :D