This is a story about a young girl, a guardian angel and a pet dog. One day, 4-year-old girl, Rui had to go to her grandmother's house that she had not met before in person, because her grandmother was in critical condition. While her mother took care of her grandmother, who became ill-conditioned, it was watched in the hard circumstances because Rui felt sad and lonely every day. But one day, the guardian angel appeared near her and he started encouraging her as much as possible. Although the girl was in a difficult situation with people who had never met, she grew up admirably with a lot of help and encouragement from the guardian angel. I believe that nobody is solitude, and everybody is protected by all means by somebody. I hope that everybody will feel much love from family members and pets after reading this book.