Next week on 90210, it... is... so... on.

On "Revenge of the Nerd," the feud between Annie and Emily escalated, but that's nothing compared to what's in store on "It's High Time." How so? Find out via the following preview:

Elsewhere on the upcoming 90210 installment:

• Silver tells Navid to sign the release for Adrianna's reality show.
• Naomi struggles with her feelings for Max.
• Ivy meets a new guy.
• Dixon, Navid and Liam take Teddy out of town.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.