The dining hall of the Grand Duchy of Altair smells of scorched sugar and imminent disaster. Bianca Altair, age twelve, stands on a chair and watches her three older brothers demolish yet another diplomatic banquet. Cassian, the eldest, has just challenged a foreign envoy to a duel over a perceived insult. Leon, the middle brother, is trying to set the tablecloth on fire with his newly awakened dragon magic. The youngest, Elio, has vanished entirely — which means someone is about to fall through a trapdoor. This is Tuesday.

Bianca is the only Altair daughter, the only person in the duchy who knows where the fire extinguishers are kept, and the only living soul her brothers will actually listen to when she screams. She is also, secretly, a transmigrator — a woman from modern Korea who woke up in this body five years ago and has been running triage ever since. The original novel had no Bianca. The original novel had her brothers spiral into tyranny, madness, and early graves. Bianca's self-appointed mission is simple: keep them alive, keep them sane, and keep them from burning down the empire before she hits puberty. But when the imperial family begins to eye the Altair brothers as threats rather than assets, Bianca realizes that her chaotic household management is about to become a matter of national security. She needs allies. She needs leverage. She needs someone — anyone — to help her stop her brothers before the empire decides to stop them permanently.

Also known as: I Need Someone to Stop My Older Brothers, 오빠들을 말릴 사람이 필요하다, Oppadeureul Mallil Sarami Piryohada, I Need Someone to Stop My Brothers.