At work, she's a renowned assassin. At home, she's a single mom to a teenage daughter. Killing? That's easy. It's parenting that's the hard part.

Love never hurt so good for two co-workers who enter a contractual relationship as partners in consensual play, pleasure and pain.

Seo Chang-dae, an ambitious political campaign strategist who ends up having ideological differences with his present client, receives a lucrative...