This novel is based on "The Centenarian Who Climbed Through the Window and Disappeared" by Swedish writer Jonas Jonasson. It tells the experience of a Swedish centenarian. The focus is that he became homeless when he was nearly 100 years old and had to live in a nursing home. However, the life in the nursing home made him intolerable. Finally, on his 100th birthday, he climbed out of the window of the nursing home and a series of interesting stories happened.