In a quiet residential neighborhood, a French sandwich shop called Bon-Amande. The owner and only employee is Bong Soo-ah, who quit her longtime job to open this shop after a series of events. She calls him Jin Woo-kun, and he's her first part-time employee. Since his arrival, the shop has been receiving unexpected and surprising customers. Her sandwiches are eaten out loud without realizing it, and they are eaten to the roof of their mouths.