Jeon Do-yeon

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.

While investigating a terroristic threat that goes viral online, Korean authorities discover that a suspect has recently boarded an international flight bound for the United States. ...

Hae-ra and her husband, Hoon, hire Eun-yi to look after their daughter. When Hoon gets Eun-yi pregnant, Hae-ra tries to kill the child. Soon, Eun-yi decides to seek revenge for the betrayal.