Emma becomes obsessed with the idea of relaxing on a swing after watching "The Andy Griffith Show" and orders one online. To satiate Oscar's need to 'build' the swing, she lets him assemble it, but is annoyed when her relaxation is interrupted by Oscar's need to show off his construction project. Karen and Davis attempt to get to the root of Karen's newly violent and uncontrollable reactions to Hank, while Brent, Wanda and Lacey butt heads when Wanda's new aromatherapy diffuser has a surprising impact on life at Corner Gas.