could some one identify this Drama?

[Kristen Law]

could some one identify this Drama: a young man delivers this package to a secret place after he deliver the package he is asked to leave,but he sneaks back in to get his pay and meets a woman. He fights against this woman and during their fight they are attacked by humans that have transformed. The attackers feel some connection to the young man and kidnap him. The woman goes to save the young man and finds out he is the same as her.
Please serious answers