During a trip to the zoo, Hal gets jealous of Lois' former boyfriend; Dewey and Malcolm fall into a tiger pen, and Reese butts heads with a goat...while Francis gets stranded on a cross-country car trip and takes a new job at a dude ranch.

When Lois is repeatedly insulted at Hal's family reunion, the boys take revenge and Hal is prompted to finally stand up to his avoidant father.