Buck is a big, strong dog. Manuel sells Buck to gold miners in the North. Buck has a difficult life. He becomes wild. John Thornton saves Buck. Buck loves John Thornton very much. You can read about the bonds between dogs and wolves in this story. Buck learnes about wolves, sledges and snow. He meets good men and bad men. This is the story about Buck’s adventures. With its Audio CD it improves your pronounciation, too.