A deadly fire destroyed Flora’s family years ago, and she has waited long for revenge. When her enemy Rose gets engaged to the cold, principled billionaire Dante, Flora sneaks into their mansion as a maid. She tempts Dante and breaks through his strict boundaries, while scheming to turn Rose and him against each other. Now Flora walks a thin line between maid and avenger. She will tear apart their engagement and make Rose atone for her past crimes.