When your boyfriend of six months breaks up with you, your best friend is there to pick up the pieces as, as he always has been. But this time, he may do more harm than good, being the reason you were broken up with in the first place.

Your powerful, criminal father assigns you a secret agent to keep you safe as you travel across the country, but you can't help but notice that you seem to be attracting more assassins than ever. Jaehyun, the agent in question, seems to notice it too.

Ever since you arrived in 20th century London, you've been seeing ghosts at every corner. You're not the only one—Yoon Jeonghan, a perfect stranger with scarred fingers, inked hands and a seraphic smile, claims to be able to see them too.