Hannah Montana Season 1 Episode 3
Miley and Jackson catch Robby on a date with a mystery woman, and the kids decide to act sneaky in order to learn more about their father's new acquaintance.
Title: She's A Supersneak
Miley and Jackson sneak out of the house to go to a movie preview, and discover that Robby is secretly on a date with a real-estate agent. An enraged Miley uses Hannah Montana to find out about their relationship.