As crown princess of Lornesse, Isolde is reborn right before a fateful political‑marriage announcement. In her past life, the failed union triggered a catastrophic war that destroyed her kingdom. To spare her younger sister Sabine from the deadly dragon‑court marriage, Isolde volunteers to take the dangerous mission herself. She endures betrayal, frame‑ups and physical harm at home before arriving in the harsh Dyrvik Citadel, where she meets Branoc, the dragon lord. Burdened by old wounds and complicated ties with her former suitor Stellan, Isolde gradually breaks free from others’ expectations. She gains mutual respect and genuine affection with Branoc, uncovers multiple conspiracies, resolves conflicts between two realms, and builds a new life rooted in free‑will choice rather than forced bonds or royal duty.
