In the realm of Silverland, Prince Sapphire harbors a significant secret: despite being born a girl, she possesses the hearts of both a boy and a girl. To safeguard the kingdom from the treacherous Duke Duralumin, next in line for the throne, Sapphire assumes a dual persona, masquerading as a boy due to the kingdom's male-only monarchy. When God dispatches the novice angel Tink to retrieve Sapphire's male heart, she adamantly clings to both aspects of her identity. As the Duke plots to seize power, Sapphire faces a dilemma as her two selves collide, complicated further by her blossoming affection for Prince Franz Charming of a neighboring realm. Amidst thrilling escapades, Sapphire and Tink must confront formidable foes to defend the throne against all odds.