Vince Vaughn's "Unfinished Business" is about a business trip to Europe gone disastrously awry. The film also marks his return to the world of adult comedy.

Vince Vaughn first made his name in R-rated comedies such as "Old School," "Wedding Crashers" and "Swingers." He then turned to the tamer side, making PG-13 movies such as "The Break-Up," "The Internship" and "Couples Retreat."

According to Contact Music, the 44-year-old actor is quite happy to be going back to his R-rated roots with his new movie about a business trip going hopelessly awry.

"I would always prefer to go R if you're doing anything aimed at adults," the "Rudy" star said. "But as an actor you're a part of a team; you're not really in charge of the rating. There are things I've done recently that have been made PG-13 once we began production. These films were supposed to be rated R but the bar got moved."

There was a time when studios were going for PG-13 movies but the Minneapolis-born comedian has seen the trend shift towards more adult-driven comedies once again.

"When you're dealing with subject matter and topics that are adult-driven, you want to have that freedom to think and act like adults," he shared.

With Vince Vaughn's "Unfinished Business", the cast was able to push the envelope a little further than the usual.

"This movie just has some odd perspectives on stuff," the "Starsky and Hutch" actor said. "It's easy to make the guy be kind of incompetent, but what I think is cool is that my character is actually a guy who, yes, has his challenges, but he's a competent guy facing those challenges, which makes it more interesting."

Vince Vaughn admitted that he never really had a rock solid plan for his acting career.

"Mostly I've had lots of fun in lots of different ways - acting, producing and writing," he shared. "It was great early on, working with Jon Favreau on 'Swingers' and all the things that followed. Then doing those early independent films was great, and the big studio comedies were fantastic. And it's nice now to be mixing it up and doing something different with the new season of 'True Detective'."

Vince Vaughn's "Unfinished Business" was released on March 6, 2015.