In the fall of 2004, twelve-year-old Oscar Egg is sent to live with his father in a strange netherworld under Boston's Fenway Park, where he joins the fairies, pooka, banshee, and other beings that are trapped there, waiting for someone to break the eighty-six-year-old curse that has prevented the Boston Red Sox from winning a World Series.

The future Condo Prince of Baltimore -- The dusty, golden box -- The underlife of Fenway Park -- Home, of course! -- Under the pitcher's mound -- The first birthday gift -- The Curse -- The message inside of the curse -- Auntie Gormley dreams her soul elsewhere -- Oh, the Cursed Creatures! -- The Pooka and the Banshee -- The birthday party-more gifts -- The past -- The door to the past -- Meeting the Pooka--face-to-face, eye to glowing eye -- The weasel spy -- Teams -- A new coded message -- A race through time -- The roster of twelve-year-old greats -- Recruiting -- The lineup -- Auntie Feldelma's team -- The game between the greats -- Broken -- Epilogue.