For anyone who didn't see the '80s light sf movie, The Last Starfighter, the premise is appealing and classic: (minor SPOILERS) young adult kid stuck living and working in a trailer park, wants more, there's a Starfighter video arcade game set up in the park, one day he goes for the record on the game, and turns out the game was a recruitment tool for something much bigger than his humble trailer park, and he passed, rises to subsequent challenges, and becomes a hero.
(Co-stars Robert Preston, as a very enterprising and scrappy recruiting headhunter, a bit like his The Music Man film character, but without the musical numbers.)