Three billy goats live by a river and they are brothers, called by everyone the Billy Goats Gruff. Each billy goat looks different to his brother, but they are happy goats. One day they realise they have eaten all the grass in their field, and want to cross the bridge to get to the other side where there is plentiful lush green grass, but a big green troll lives by the bridge, and fights anyone who tries to cross it. When the Three Billy Goats Gruff decide to cross the bridge, to get past the Troll, an exciting day takes place. You need to read the book to find out what happens next.