Fourteen-year-old Ronan Boyle is the youngest and lowliest recruit to the secret Garda, the Irish police force that handles the misdeeds of numerous magical creatures. Ronan's parents are in jail for a crime they didn't commit, and he's convinced that they were framed by the wee people. So despite his small size, poor eyesight, and social awkwardness, Ronan is determined to learn all he can from the Garda in order to prove his parents' innocence. To show he's got what it takes, he'll have to confront a fiery leprechaun, a sinister harpy, and a whole world of monsters.