When Hector and his friend Mando, seventh-graders, visit Uncle Julio, a photographer in Fresno, they have more excitement than they ever imagined. On a photo shoot in a rickety old plane, they spot an armored car heist, and Uncle Julio snaps some shots of the robbers. After they report what they saw, the two robbers decide they have to teach Hector and Mando a lesson. When the bumbling thugs meet up with the quick-witted boys, the results are hilarious.