Bess is alarmed to discover that Julie has a sister, despite Julie telling all the children that her sister was dead. Julie forbids the family from contacting her but Bess, desperate not to have any more secret relatives, enlists Brianna, Amber and Margaret to help her investigate. Danny takes Oscar away to an architects' conference where his special role as guest speaker is compromised and, when a council officer shuts down Kayne's backyard protein powder shop, Wayne is determined to fight.