The main character in the story is San, a 12-year-old Vietnamese boyfriend. San happened to be on a world tour with a group of international youth of his age to support the cause of a noble cause. To be selected, members of the Light Squad of 3 men and 2 women went through survival skills challenges in the Mongolian steppe, on the Philippine island of the sea, in the jungle of Cambodia. The trip then took the group through many countries from Hanoi to China, to Russia, Northern European countries, England, France, Central Europe, Greece, Turkey, Iran, Nepal, India, the Americas, Australia, Africa, and end in Jerusalem.
Learning contents integrated into the journey include knowledge of history, geography, mathematics, physics, general science, literature, music, culture and foreign languages. Members also learn the skills to improve people useful in nature and in modern life.
Every day just spend 30 minutes studying and playing with San Zu, then after 1 year Vietnamese students will have a great amount of knowledge about the world, helping them to be able to "compare with the powers of the five continents. ". You will also develop thinking skills, compassion, global citizenship, a sense of responsibility, and above all, love of your family and country.