Diana Sato (41 years old), a woman from Hong Kong, lives in Tokyo, Japan with her two elementary school-age sons and Eiji (8 years old). Diana starts her own Chinese conversation class as a side job to save for her son’s future.
Taku Nagayasu (35 years old) joins Diana’s Chinese conversation class due to her random chance. Nagayasu was a 35-year-old part-time worker who lived with vague anxiety about his life.
Through his Chinese conversation class, Nagayasu gradually began to look beyond Japan to the world. At the same time, a major event that shook the world was taking place in Hong Kong…