On St. Patrick's Day, Ryan says out loud, "I wish I didn't have stupid piano lessons." Someone answers, "Saints be praised. 'Tis done." In an instant, his piano teacher's house—along with his teacher, Miss Talbot, and his classmate, Angela—are gone! Rafferty McGill, a small, strange man in a green vest, pants, and felt hat, says he is responsible. Ryan can't believe his eyes or his ears: The strange little man claims he is a leprechaun! And now that he has granted Ryan's wish, Ryan must grant Rafferty's wish for a pair of shoes. It all has something to do with an ancient curse!

Readers will laugh out loud at Rafferty McGill's antics and share in Ryan's frustration as he tries to sort out this St. Patrick's Day mess. Can Ryan bring back Miss Talbot and Angela? If he doesn't, he may be stuck with one unhappy leprechaun—for life!