Lapis Idocrase is the youngest daughter of a celebrated mage family where exceptional magical talent is the baseline. She missed that baseline entirely. Mocked at magic school as the Burden of the Idocrase Family, Lapis sets her sights on a prestigious entrance exam that requires collecting Twinkle Gems — rare objects crystallized from the strongest feelings in the human heart. The assignment sends her into the human world, where a collection of difficult, hard-to-handle men are waiting.