Carole turns fifty and decides to celebrate her birthday with an extravagant, all-out bash. Ramona and Mario prepare for life in an empty nest as they send daughter Avery off to college, while Kristen and Josh seek professional help to put their marriage back on track. Sonja receives an unexpected piece of jewelry and a promise from Harry Dubin , Aviva's ex, but a shocking turn of events rattles their relationship to the core.