If you mean what is Beverly Hills 90210, then this is your
answer. It is a drama about High school kids that live in Beverly
Hills. "Beverly Hills, 90210" is the original TV series that the
modern "90210" is based on. 90210 is a spin off staring the next
generation and features some of the characters from Beverly Hills,
90210. It is named after, the most famous zip code in America, the
zip code for Beverly Hills.