Nathaniel Fludd's life has taken a turn for the worst. With his parents lost at sea, he lands on the doorstep of a distant cousin—the world's last remaining beastologist. Soon Nate is whisked off on his first expedition, to Arabia, where the world's only phoenix prepares to lay its new egg. When disaster strikes, Nate quickly finds himself all alone.
Will he be able to see the phoenix safely hatched, keep his accidental pet gremlin out...

When Nathaniel and Aunt Phil are summoned to the Welsh countryside to calm the giant dragons known as wyverns, they suspect the problem was caused by the same sinister man who has been trying to steal the Book of Beasts.