The story takes place in Lanhai City, a coastal city with a strong sports atmosphere in the country. There is not only a mature ecology of traditional sports (football, basketball) here, but also a number of niche and trendy sports, of which Ultimate Frisbee is a representative one. Lanhai City has a complete campus sports league system (high school group, university group) and urban amateur leagues. Frisbee has become a new favorite among teenagers due to its characteristics of "low threshold, high collaboration, and no physical confrontation." However, it also faces problems such as prejudice against traditional sports, shortage of funds, and lack of professional coaches.
