The four men arrive at Caesars Palace, toast on the rooftop, and decide to take a "one shot" of tequila before heading out. The next morning, Phil, Stu, and Alan wake up in their trashed hotel suite with no memory of the night before. Doug is missing.
On the roof, they find a mattress (the one from the statue). They realize: they put Doug on the mattress as a prank. They then launched the mattress onto the statue . Doug was on the roof, sunburned and furious, but alive. The Hangover Dual Audio
Would you like the plot summary of or Part III as well? The four men arrive at Caesars Palace, toast