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They planned a Vegas bachelor party that they would never forget. Now they really need to remember what exactly went down! Whose baby is in the closet of their Caesars Palace suite? How did a tiger get in the bathroom? Why is one of them missing a tooth? And most of all, where is the groom?! What the guys did while partying can't compare to what they must do sober in an outrageous caper that has them piecing together all their bad decisions from the night before - one hazy clue at a time. Director Todd Phillips (Old School) and an all-aces comedy cast bring it big time with unpredictable situations that somehow all fit together. Tie one on with the Hangover.