When David’s fiancé calls off their wedding shortly before the big day, his eternally optimistic best man, Flula, persuades him to embark on the honeymoon trip they had originally planned. This involves a week-long backpacking journey through the stunning Oregon mountains. Their escapades are interwoven with excerpts from William Clark’s journal, which detail his camaraderie with Meriwether Lewis and the landscapes they traversed during their historic expedition.