Critics at the 68th annual Cannes Film Festival were not impressed with Matthew McConaughey and Naomi Watts' new film.

During a press screening for "Sea of Trees," which was directed by Gus Van Sant, were met with both laughter and boos -- and this is not a funny film.

PHOTOS: Stylish Stars at the Cannes Film Festival

The drama is about an American (McConaughey) who heads to "suicide forest" in Tokyo to take his own life after the death of this wife (Watts). It's here that he befriends a Japanese man (Ken Watanabe) lost in the forest and together they search for a way out.

McConaughey, who won his first Oscar in 2014 for his role in "Dallas Buyers' Club," addressed the negative reactions to his film. "I liked the experience of making it and I'm glad we got the opportunity to introduce it to the world," he said during press conference on Saturday. "Anyone has any right to either boo or ovate."

NEWS: Matthew McConaughey Defends His Romantic Comedies

Regardless of the audience's reaction at Cannes, Lionsgate and Roadside Attractions picked up distribution rights for "Sea of Trees," Entertainment Weekly reports. The film is expected to hit theaters later this year.

This isn't the first time an A-lister has been booed. During the 67th annual Cannes Film Festival in 2014, Nicole Kidman's film "Grace of Monaco" got negative reactions from critics. The Grace Kelly biopic will now air as a TV movie on Lifetime.