Eloisa's twin sister, Giada, married into a wealthy family but died unexpectedly soon after. Doubting that Giada's death was natural, Eloisa suspects foul play and is determined to uncover the truth. Disguising herself as Giada, she infiltrates the affluent family, navigating complex relationships and facing her sister's husband and others. As she delves deeper, Eloisa seeks not just answers but also revenge for her sister's untimely demise.