Tamar was a girl who lived a really long time ago, in a place called Israel. Her dad was a very important man named David, who was a king.
One day, Tamar's half-brother Amnon did something really bad. He pretended he was sick and asked Tamar to bring him some food. When she did, he hurt her very badly.
Tamar was very upset and told her brother Absalom what happened. Absalom was very angry and wanted to take revenge on Amnon, so he made a plan to kill him.
After Amnon died, Tamar was very sad and couldn't get over what happened to her. But her story helped people in Israel learn to be kind to others and not hurt them.