Seven brothers, Heeseung, a lawyer, Jake, a scientist, Jay, an engineer, Sunghoon, a wealthy CEO, Sunoo, a doctor, Jungwon, a teacher, and Niki, a substance user, fight their way to survival after each encounter an attack linked to the reading of their father's last will and testament.

Season 1 Kim Sunoo, a bright and charismatic young man, embarks on a new chapter of his life as he enrolls at Gangnam National College. Little does he know that his journey will be filled with unforgettable moments and unexpected romantic pursuits from six boys at the school. Season 2 Kim Sunoo and his friends continue navigating the complexities of college life, struggling with personal challenges that unveil hidden feelings and personalities within the group. As their individual emotions intertwine, they must confront their growing affection for each other while learning to embrace their true selves.