The continuing adventures of beastologist-in-training, Nathaniel Fludd, as he accompanies his intrepid Aunt Phil on a dangerous mission across West Africa to find a deadly basilisk that is missing and begins to find clues relating to the mysterious disappearance of his parents.

Beastologist-in-training Nathaniel Fludd and his Aunt Phil nurse a mysteriously ill unicorn, try to stop Obediah from taking the unicorn's horn, and finally get a solid lead on the whereabouts of Nathaniel's parents.