Not all balls end with a glass slipper and a handsome prince...

Lily James scrimped and saved, working two jobs so she'd have enough money to take her dream trip. An entire summer in England with her best friend. Once summer was over, she’d return home and join the workforce. Who cared if it wasn't what she wanted? At least it was a steady job.

The last week of their trip, they were staying in an actual castle. As a farewell, Amy's cousin was throwing them a costume party on their last night in England. They'd scoured every shop in every town as they traveled around the country until they found the perfect dresses. But not all evenings end with a prince and a glass slipper.

When Lily loses her way in the immense twisty castle, she finds herself in a different time. Medieval England is nothing like she thought it would be. Lily just wants to go home. Back to hot showers, pizza, and her beloved library. She wants her normal, boring, ordinary life back, but it seems fate has other plans.

Tristan De Savage is haunted by his past deeds. He's facing threats to his castle, his childhood friend wants to kill him, and his page thinks he saw a fairy in the gardens. There's no time to aid damsels in distress, no matter how enchanting they be.

Fall through time and fall in love with Lily and Tristan.