Falitina, the daughter of a duke in a certain kingdom, lives a comfortable life until a vivid nightmare shows her a future where her entire family is executed. Convinced the dream is a warning, she decides to protect her sickly younger brother Gemini at all costs. But misfortune strikes: Gemini dies, and Falitina is framed as a villainess at a prince’s birthday party by a girl named Amanda, who publicly offers friendship only to twist Falitina’s words. The prince distances himself, and Falitina is arrested on trumped‑up charges. To shield her family, she endures imprisonment and silence.

Her other younger brother, Serion, who once dismissed her as useless, discovers the truth of her sacrifice and becomes fiercely protective. He uses his genius to work toward her exoneration and later exacts a calculated revenge on everyone who wronged her. The story follows Falitina’s quiet, resolute struggle to avert the doomed future and Serion’s escalating retaliation. In the end, Serion destroys those who exploited and humiliated his sister, while Falitina comes to realize that her devotion was not unreciprocated, finding a quiet, bittersweet resolution. The tale is a slow‑burn revenge drama set in a fantasy noble society, driven by the bond between a self‑sacrificing sister and her once‑estranged younger brother.