After vanishing from her family 50 years ago, a grandmother suddenly reappears with shocking news—she plans to distribute a 10-billion-won inheritance. Her unexpected return throws the entire family into chaos as children and grandchildren scramble to win her favor. What follows is a series of comedic mishaps, rivalries, and schemes. But as the family battles over money, they slowly begin to rediscover what truly matters—leading to unexpected growth, healing, and a renewed sense of connection.