In the heart of the bustling city, follow the endearing tale of three brothers - Jimin, Jungkook, and Taehyung. Despite their parents being abroad, their connection is unyielding. Jimin, the carefree 18-year-old student, finds solace in the warmth of his older brothers, Jungkook, a dedicated 25-year-old doctor, and Taehyung, a 27-year-old CEO. Jungkook, the responsible older brother with a penchant for annoying his siblings, showers them with affection, especially his newfound obsession with banana milk. Meanwhile, Taehyung, with his strict CEO demeanor, transforms into a small tiger around his family. Their individual lives and quirks create a tapestry of love and care. Jimin's pinky promises, Jungkook's bunny-like habits, and Taehyung's insistence on family health become the threads that bind them together. In the midst of work, studies, and personal challenges, their unique connection becomes a source of strength, weaving a heartwarming story of true love and care among these three brothers.