Original: This book chronicles the adventures of thirteen-year-old demigod Percy Jackson as he and his friends rescue his satyr friend Grover from the Cyclops Polyphemus and save the camp from a Titan 's attack by bringing the Golden Fleece to cure Thalia 's poisoned pine tree .
Simplified: This book is about the adventures of thirteen-year-old demigod Percy Jackson . It describes how he and his friends rescue his satyr friend Grover from the Cyclops Polyphemus .