Acting on his master's orders, Ye Qiu descends the mountain and unexpectedly rescues Tang Guo, the young heiress of the Tang family, along the way. Due to a misunderstanding, she mistakes him for a lecher. When she learns that Ye Qiu is the bodyguard her father hired at great expense, Tang Guo resists him at every turn, but gradually comes to trust him as they face repeated dangers. With exceptional martial arts skills and medical expertise, Ye Qiu protects Tang Guo while investigating the mysterious Viper Organization. As the figures behind the scenes gradually emerge, he discovers that his journey down the mountain carries another mission. Adapted from the novel Close-Protection Bodyguard by Liu Xia Hui.