I like the book because of Worm. Worm is a dragon, which looks like a worm. Worm is really lazy the first day. He just does nothing. But during the night, the dragon masters plan a trip to go under underground. And they go underground. But one of the dragons is so scared, so he fires a fireball at the wall and wall makes the tunnel collapsed on top of them. But they don't die. Wom used his mind and moved the tunnel and safely went out. But then they are in trouble.