Amy Schumer, Bill Hader, Brie Larson In 'Train Wreck' First Trailer

Since she was a little girl, it's been drilled into Amy's head by her rascal of a dad that monogamy isn't realistic. Now a magazine writer, Amy lives by that credo - enjoying what she feels is an uninhibited life free from stifling, boring romantic commitment - but in actuality, she's kind of in a rut. This is the first trailer in HD.