New retiree Barb joins a Holiday Committee but clashes with long standing member Kath. When they realize their kids have started dating, they conspire to break up the happy couple.

When free-spirited Kath (Rhea) and uptight Barbara (Broderick) clash at a Christmas committee meeting, they're shocked to discover they've accidentally set up their adult children via a dating app. Determined to stop the romance, the two mothers team up, only to realize they have more in common than they thought. As their kids' love blossoms, so does an unexpected friendship between their meddling moms, bringing both families together for a festive Christmas.