“90210” centers on a group of students attending the fictional West Beverly Hills High School. Among them are Annie and Dixon Wilson, newcomers to Beverly Hills. Their father, Harry Wilson, has moved back from Kansas to his childhood home in Beverly Hills to look after his mother, Tabitha Wilson, a former TV and theater star with a drinking issue, which causes tension with his wife, Debbie. As Annie and Dixon navigate their new environment, they face the challenge of making friends while trying to respect their parents’ expectations.