Actress Catherine Keener will be starring in the Sean Penn-helmed Intothe Wild.

Catherine Keener and Vince Vaughn are taking a walk on the Wild side. The two have boarded the Sean Penn-helmed Into the Wild, which Paramount Pictures’ new specialty division is distributing. Emile Hirsch has already signed on to star in the film, which chronicles the true story of Christopher McCandless, who graduated from college in 1992, abandoned his possessions and hitchhiked to Alaska to live in the wilderness and return to nature.