Description: Aaron Greenberg (Hill) gets things done. The ambitious 23-year-old has exaggerated his way into a dream job just in time for a career-making assignment. His mission: Fly to London and escort a rock god to L.A.s Greek Theatre for the first-stop on a $100-million tour. His warning: Turn your back on him at your own peril. British rocker Aldous Snow (Brand) is both a brilliant musician and walking sex. Weary of yes men and piles of money, the former front man is searching for the meaning of life. B