After spending two years in prison for a false conviction, Iris, a girl from the bottom of society, strikes an undercover deal with Adrian, the second son of the Sterling family, to rescue her detained younger sister. She pretends to approach his elder brother Julian to gather criminal evidence.During her revenge and undercover mission, Iris gradually discovers that Julian masterminded both her father’s death and her wrongful imprisonment. Throughout it all, Adrian has been silently protecting her. In the end, the two join forces to expose Julian’s crimes and achieve mutual redemption.