Martha goes to her first dance and is bitterly disappointed. When she discovers that the ruby ring received on her birthday can grant wishes, she makes hers--to go to a truly magnificent ball! The wish is granted, but she finds herself back in the Ireland of May 1798. She meets a certain Andrew who is captivated by the charm of the "cousin" from Donegal. In the background, storm clouds are gathering. Martha is torn between two worlds, and events move to a dramatic climax with the arrest of Lord Edward Fitzgerald, leader of the Rebellion. That same night, the ruby ring is stolen!