A parallel universe, a pirate ship, a talking bird, and one seriously eccentric captain. After a laboratory mishap, inventor-in-training Angus Clark finds himself aboard the Fearsome Flea. The pirate crew mistakes the middle schooler for his alter ego, a dirty, rude cannon boy. Clever Angus must face a sea battle and a nasty mutineer, and walk the plank.

Will the scientific Angus survive life on the leaky Fearsome Flea? Why is Maniacal Marge out to get him? Will Angus ever return to his own world? And can Mrs. Clark endure the mischievous pirate who now lives under her roof? Helped by a sassy, body jumping macaw and a fastidious, cookie-baking pirate captain, Angus uses his ingenuity and trusty screwdriver to set the worlds right.

The Pirate's Booty begins the story of Angus Clark, a middle schooler striving to be an inventor. While working on his latest invention, Angus accidentally transports himself to a parallel universe where pirates still terrorize the waters. Along the way, he discovers that his most loyal friend may very well be the annoying girl in his math class.