"Sibling Bonds," follow the story of Jungkook, who returns home after a year away. Jungkook, 25, is a strict but caring brother to his 14-year-old sister, YN. When Jungkook left, YN's behavior changed. She began talking back to her parents and struggling in school. Now that Jungkook is back, he's determined to help YN change for the better. Through ups and downs, they learn about the importance of family and the strong bond between siblings.