Things appear to be tense between Lydia Plath and her family in the Welcome to Plathville season 8 trailer. "Everyone is stepping into a whole new chapter in their lives," Lydia, 22, says in the clip that dropped on Monday, March 2. The trailer then cuts to a family dinner between the Plath family including Lydia, husband Zac Wyse and Kim Plath. (Lydia is one of Kim, 53, and Barry Plath's nine children, including Ethan, 27, Hosana, 26, Micah, 24, Moriah, 23, Isaac, 20, Amber, 17, Cassia, 14, and Mercy, 13.) While gathering at the table, Kim hints that the family had the potential to expand.