My Bodyguard My Hero season 4 (2016)

Yang Mei was told by his descendants, who came from the year 2466, that if he respect and abide by the ways of his ancestors, he would be ride of the 18 generations of bad luck his descendants have to endure. With help from her grandmother's a magical stone left by Hai Bo, but accidentally used the stone to recall a character from famous novel "The Deer and the Cauldron" (Author: Louis Cha).