These half-sisters meet, and suddenly, home life starts feeling like an open house but with less privacy and more surprise puppies. The driving lesson gets outsourced, tattoo plans go on autopilot, and decisions that used to be made between two people start coming from the new committee member who only just learned where the mugs are kept. It’s family expansion by way of spontaneous policy change and a constant supply of unsolicited life coaching. 

People love to pretend that boundaries are just a formality, especially when they’re new in town and itching to put their stamp on every routine. An uninvited expert starts sprinkling advice, rearranging schedules, and offering upgrades that nobody asked for, each one wrapped in a smile and the subtle promise that previous household rules have clearly expired. Milestones get hijacked, preferences take a back seat, and the original crew spends more time nodding awkwardly than actually making decisions.