**Jeon Jungkook**, *cold Billionaire, a single dad with a three-year-old adorable toddler* **jungwoo**, *has been heartbroken after discovering his wife's cheating. Resenting the world and having sworn to never trust another woman, he reluctantly decides to appoint a babysitter to look after his son. As a young girl (y/n) is willing to take on the job.*