For thirteen-year-old Mary Chilton, every day is filled with adventure. She is surrounded by friends and family, and her windmill house feels like a castle to her. But Mary can't forget that her family was forced to leave their last home because of their religion, and even in Holland, things are looking dangerous again.
Mary's world is changed forever when her father announces that they will join the Pilgrims traveling to the New World in search of more freedom and a better life. She must leave her older sisters and friends, and even give up her cat. With only the clothes on her back and her grandmother's locket, Mary joins her parents aboard the Mayflower and starts the dangerous journey across the Atlantic Ocean.
Mary faces deadly storms, cruel bullies, cold, starvation, and illness. With the help of some new friends and a special message on her grandmother's locket, Mary discovers she is stronger and braver than she ever knew. But when the unthinkable happens, will Mary find the courage to make her dreams of a new home come true?