Xu Hong Dou is a front desk manager in a five-star hotel in Beijing. She contributes all her time and energy to the guests. Being busy with work has become part of her everyday life. When her best friend Chen Nan Shing passes away due to illness, Xu Hong Dou remembers their promise to travel to Yunnan together, which will never be fulfilled now. She tenders her resignation letter and books a flight to Yunnan for a vacation.