Cursed to the confines of their underground city, an ancient rivalry between the most powerful troll families has reached a fevered pitch. At the heart of it is Pénélope d'Angoulême, a talented artist and the eldest daughter of a power-hungry duke. When Pénélope accidentally destroys her sister's chance to become queen, her father gives her an ultimatum: find proof that Marc Biron, the right hand to their family's greatest enemy, is guilty of treason. Or die trying.

The trouble is, she's in love with him.

Together, Marc and Pénélope must navigate the complex politics and dangerous magic of their world. Powers on all sides are intent on using them as pawns, forcing them to risk everything for a chance at happiness.

Except being together will be the greatest risk of all...