A Marriage Alliance for Revenge

Empress Olivia, although feeling unworthy of joy, allows herself a glimmer of optimism upon learning of her pregnancy with the emperor's offspring. Unfortunately, her optimism is quickly dashed when her spouse poisons her tea, causing her and their unborn child's demise. After awakening in the unfamiliar body of a slum dweller, Olivia swears to seek revenge against her husband and avenge herself. In her quest, she seeks out Duke Lucas Viterpan, her previous betrothed and the ousted empire heir. Is it possible for them to overthrow those who wronged them and reclaim what was taken?