Lilybet Green is known as a bug-eyed freak. She is new in Providence, California and she has to deal with the death of her grandmother, Gigi. On her 13th birthday, she receives a mysterious package and when she opens it, dangerous fireworks go off and she is knocked out. When she wakes up, she finds Gigi's old key and three leprechauns in her bedroom who capture her and take her to their (the Greens) land where she is to become the keeper of their gold like Gigi had done before her. But before Lily can become a keeper, she has to pass three tests, or else she will go back to her old life with no memory of the leprechauns or Gigi. If she does pass the three tests, she will receive a load of allowance and very good luck. With the help from her fellow leprechauns and the clues Gigi left for her, she will attempt the biggest challenge of her life!