Archie's brother Paul returns to Glenbogle and is enlisted into helping to run the estate. Although this brings him into conflict with Archie and Lexie, who feels left out of their close relationship, it also allows Archie to think about his role and the world beyond Glenbogle. Then his sister Lizzie arrives and provides Archie and Lexie with their toughest dilemma yet. Meanwhile, Molly and Andrew's deepening relationship falters when a revelation leaves Molly reeling. She seeks solace in her old friend Golly, whose feelings for her are stronger than he suspected. The arrival of his daughter Jessica also forces him to take a crash course in parenting. Despite having a new girlfriend -- Kilwillie's niece Hemione -- Duncan is attracted to Jessica, who has usurped him as Golly's deputy.