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.

Movie star Vincent Chase, together with his boys Eric, Turtle, and Johnny, are back - and back in business with super agent-turned-studio head Ari Gold on a risky project that will serve as Vince's directorial debut.

A night debauchery in Las Vegas goes massively awry when three groomsmen lose their best friend during his bachelor party, just days before his impending wedding.

Rocky Balboa, now in his late fifties and retired from boxing, lives a quiet life as a widower, Adrian Pennino having died from cancer four years prior. He now runs a small but successful Italian restaurant named after her, where he regales his patrons with stories of his past. He also battles personal demons from his grief over Adrian's death, the changing times, and his eroding relationship with his son Robert, a struggling corporate employee. Paulie Pennino, Rocky's brother-in-law, continues to support him whenever he can, and is guilt-ridden over his poor treatment towards his late sister.