In the summer before their freshman year in high school, Julie (Alexa Vega) has a slumber party with her best friends, Hannah, Yancy and Farray -- and they end up having the adventure of their lives. In an attempt to cast off their less-than-cool reputations once and for all, Julie and her friends enter into an all-night scavenger hunt against their "popular girl" rivals. Sneaking into clubs, hijacking dad's car, evading Julie's mother, and maybe even a first kiss -- anything's possible at Julie's sleepover.

Julie (Alexa Vega) borrows a skateboard to help her compete in a scavenger hunt.

Julie (Alexa Vega) is stunned when she sees her mother (Jane Lynch) dancing at a popular club.

Carmen (Alexa Vega) and Juni (Daryl Sabara) discover an angry lava monster while caught in a virtual reality game.

The brother and sister spies return in the next chapter of their adventures. This time Carmen (Alexa Vega) is trapped inside a virtual reality video game designed by the evil Toymaker (Sylvester Stallone) and Juni (Daryl Sabara) must come to the rescue.

The brother and sister spies return in the next chapter of their adventures. This time Carmen (Alexa Vega) is trapped inside a virtual reality video game designed by the evil Toymaker (Sylvester Stallone) and Juni (Daryl Sabara) must come to the rescue.