Tisdale kicked 'Upstairs' by Fox

Schultz to helm 'High School' star in feature debut

"High School Musical" star Ashley Tisdale will make her feature film debut in Fox's adventure comedy "They Came From Upstairs." John Schultz is directing with Barry Josephson producing.

Also cast are Robert Hoffman ("Step Up 2 the Streets"), Carter Jenkins ("Viva Laughlin") and Austin Butler ("Ned's Declassified School Survival Guide"). Ashley Boettcher and Henri and Regan Young also have been cast.

The script, by Mark Burton and Adam F. Goldberg, revolves around a group of teens who team up to defend their Maine vacation home from aliens that have invaded upstairs.

Joe Hartwick Jr. is co-producing and Marc S. Fischer is executive producing the movie, which is being co-financed by Fox and Regency. Fox is distributing.

Marc Resteghini is overseeing for Fox, while Kara Francis Smith shepherds for Regency.

Production starts at month's end in Auckland, New Zealand.

Tisdale is known for playing rich-girl Sharpay Evans in Disney Channel's "High School Musical" telefilms. She will shoot "Upstairs" before moving on to the third installment of Disney's moneymaking phenomenon, which is being prepped for the first time as a theatrical feature.

Tisdale is repped by Gersh and manager Bill Perlman.