Thanks to her sister Euryale's bargain with the gods, former gorgon Stheno is back in human form—but far from comfortable in her skin. As the fiercest warrior of her three sisters, she mourns her tough, beastly hide and snaky hair.

The last thing anyone would call Stheno is girly—much less beautiful—but before she sets out to find her lost, mortal sister, Medusa, she googles a salon at random to cut off her annoyingly long hair. Her stylist is Marwen, a man with compelling, light-brown eyes that glow with an otherworldly light.

The last of Stheno's unruly locks barely hit the floor when the first attack comes, and in a heartbeat they're on the run. As their passion ignites, they realize they didn't meet by chance. They're both entangled in a prophecy drawing them inexorably toward one fated conclusion: Medusa. But there's a faction working just as hard to make sure it never happens.

To save her sister, Stheno will have to face her fear—that once she unleashes her beast, Marwen won't look upon her with love any more, but with horror.