KIM TAEHYUNG and MIN YOONGI , two completely opposite personalities who are unaware of each other's existence, suddenly end up becoming Soon-to-be Step Brothers. But will they be able to become a family? Or will intentional misunderstandings be like a wall between them?

Bang Chan, Lee Know, and Hyunjin return to their family mansion to take over the family business, only to clash with their 16-year-old cousin Seungmin. Mischievous, stubborn, and spoiled, Seungmin challenges their authority at every turn, igniting a battle of wills in a household filled with intense emotions and hidden desires. Spoiler⚠️ Toxic behaviour Minor character death Age regression Past traumas

The Bang Family-a group of wealthy and powerful mafia brothers-unexpectedly adopts Seungmin, a stubborn and curious 10-year-old orphan. What starts as an unusual decision quickly turns into endless chaos, as Seungmin's presence shakes up their perfectly structured lives. Between clashing personalities, unexpected challenges, and a house full of secrets.