Lin Wanying was a courtesan of humble birth, who truly loved Zhengyuan King Gu Chenyin. Gu Chenyin promised a lifetime with only one person and to marry Lin Wanying as his legitimate wife. But after five years, she instead received the news that Gu Chenyin, to consolidate his power, sought to marry Song Rou. Faced with the situation where Gu Chenyin had given all his former tenderness to Song Rou, and Gu Chenyin even murdered their child, Lin Wanying finally grew disheartened, decided to become the scapegoat for the Song family, had a peach blossom mark tattooed on her back, and forever left Pingyang City, so that Gu Chenyin could never find her again.