In the mid-5th century, after the Spanish adventurer Cristóbal Columbus discovered the New World, the New World subsequently became a Spanish colony. The New World held great potential for wealth. Mangoes, tobacco, bell peppers, and corn were discovered in the New World. It brought dramatic prosperity to Europe's maritime economy. At the beginning of the 16th century, the Portuguese navigator Ferdinand Mazeren completed his one-week trip around the world. The birth of the theory of the round earth greatly eliminated many superstitious, feudal, and religious shackles in the European world at that time. Since then, people have longed for the unknown sea. It tells the story of an Italian girl who searches for the Prince Charming in her heart and becomes a navigator.