Princess Adriana of the kingdom is hunting for the silver serpent woman who once saved her life, yet she puts Serena, the laughingstock of the whole city, on the shortlist for the chief lady-in-waiting selection. Hiding behind a frivolous facade, Serena secretly investigates traitors among the royal guards and the old case involving her mother. She and Adriana move from wary testing of one another to falling in love.During the trials, Serena unleashes her silver serpent powers and reclaims her identity as the true princess. Marina, her stepmother, conspires with the salamander clan to stage a rebellion. Serena and Adriana stand side by side to defend the city and settle old scores. In the end, they are crowned separately: Serena as the Serpent Queen and Adriana as the Queen of Humans.