Sean is Annie's half brother and Annie is still in shock, but her an Naomi put their arguing aside long enough to let Annie process this new news. Harry and Debbie also deal with this new arrival of Sean by welcoming him into their home. Kelly gives Naomi and Annie advice about not letting Ethan interfere with their relationship.
Naomi broadens her friendship base and begins hanging out with new groups of people so that she isn't dependent on Annie. However, she is confronted by Annie in the lunchroom for a showdown. Silver is threated by Christina, a cheerleader for the lacrosse team, after she begins showing too much interest in Dixon. Dixon is dealing with the arrival of Sean and is wondering how this will begin to affect his family.
To watch 90210 Season 1 Episode 11 go here: