Jeon Jungkook's life has just flipped upside down. New step-dad. But also a new step-brother he didn't even know about him? But not one but two step-brothers? One is his best friend that he hasn't seen in 3 years. What will he do when he falls in love with his new big brother? Is his new brother in love with him? What will do when they have a Family Love Affair?