The original premise of the show was based on the adjustment and
culture shock that twins Brandon (played by Jason Priestley) and
Brenda Walsh (played by Shannen Doherty) experienced when they and
their parents, Jim and Cindy moved from Minneapolis, Minnesota to
Beverly Hills. In addition to chronicling the friendships and romantic
relationships of a group of close-knit teenagers, the show also
addressed numerous topical issues including date rape, alcoholism,
domestic violence, gay rights, drug abuse, teenage suicide, AIDS,
teenage pregnancy, and abortion.
The series gained popularity during the summer of 1991, when FOX aired
a special "summer season" of the show while most other series were in
reruns. The series became one of FOX's top shows when it began its
next season that fall. Viewership increased dramatically and the cast
members, particularly Jason Priestley and Luke Perry, became teen
idols, while the series would make actresses Shannen Doherty, Jennie
Garth and Tori Spelling household names in the US. The show also had
many cast changes, though Garth, Spelling, Ian Ziering and Brian
Austin Green were regulars during its entire run.