Two years after the bachelor party in Las Vegas, Phil, Stu, Alan, and Doug jet to Thailand for Stu's wedding. Stu's plan for a subdued pre-wedding brunch, however, goes seriously awry.

After his engagement suddenly ends, Joshy and a few of his friends decide to take advantage of what was supposed to be his bachelor party in Ojai, California. In their attempt to help Joshy deal with the recent turn of events, the guys turn the getaway into a raucous weekend filled with drugs, booze, debauchery, and hot tubs.

Doug Billings and Tracy Garner are about to get married. Two days before the wedding, Doug and his groomsmen hop into Tracy's father's Mercedes for a 24-hour stag party in Las Vegas. The morning after their arrival in Vegas, they awaken in their Caesars Palace hotel suite each with the worst hangover. No one remembers what happened in the past twelve or so hours. The suite is in shambles and Doug is missing. Phil, Stu and Alan try to find Doug using...

Seth and Evan are accepting the fact that they will be going to different colleges in the fall. Now, it seems more imporant than ever that they go to a high school party, and achieve some of their long time goals. This includes, but is not limited to, losing thier virginity with the girl of their dreams by getting them wasted and being their "regret hookup." Their awkward friend Fogell gets a fake ID, with just the name McLovin, and agrees to get...