L.U.C.A.: The Beginning

Zi O (Kim Rae-won) has a special power and a secret, but he doesn't know who he really is. He is chased by mysterious figures while he tries to find answers to numerous questions that surround him. Ha Neul-ae-goo-reum (Lee Da-hee) is a detective. When she decides on a course of action, she won't change her mind no matter what. Her parents disappeared when she was only a young child. Goo-reum chases after the truth behind her parents' disappearance. She meets Zi O, and her life changes.