One day Pan sees a poster for a singing contest and at the urging of his army buddies, he enters. He nervously gets up on stage and says he wants to sing "The Sad Soldier". The band doesn't know the tune, so Pan sings it a cappella. Though he wows the crowd, he faints onstage when the song is complete. Along with a local girl, Dao, Pan wins the contest and without giving thought to the consequences, he's on a bus headed for Bangkok, where he hopes to become a big singing star.