Dragon Isle's last heir needs vast wealth to save a frozen wall against demons, but the court names her a lost princess instead. She is the last heir of Dragon Isle, and the northern barrier known as the frozen North Wall is failing under pressure from demons. Repairing it will take wealth on a scale the isle cannot easily command. Then the court makes an announcement: she is the lost princess everyone believed was gone. The claim gives her a seat among royalty, but it also gives her powerful enemies. Her new title is a shield she cannot fully trust, and every step she takes toward the throne feels like a gamble. The false princess and the princes around her are already scheming. Each one sees the newcomer as either a threat or a tool, and nobody in the court is sure whose side she will take. Any alliance she forms could save her or ruin her, and any broken promise could cost her the support she needs. The stakes keep rising because the wall will not hold on pride alone. She has to earn trust from people who have good reasons to doubt her, while the demons keep pushing against the ice. The real heiress is a dragon blends royal court politics with the glossy stakes of billionaire wealth and the raw danger of a fantasy world. The lost princess storyline gives each scene a sharp question about who holds power and who only wears it. Expect tense rivalries, quiet bargains, and moments where a single decision could change the isle's future. The show keeps returning to one question: will the court accept her before the wall gives way?