The story starts with an ugly man named Cha Min, whose fiancee dumps him, he has a friend with whom he had a crush for the past twenty years but never got accepted, and the friend Go Suyeon gets murdered. Min gets revived by a marble called Abyss and later uses the marble on Suyeon, but the catch is that they both have different faces now.

From the very start, I didn't like Cha Min's character and so of Suyeon, they added a serial killer subplot to the story but never really told us why, why was the Oh Yeong-Cheol killing everyone? Why did Seo-JI-Uk become his accomplice when he hated him so much?

There were too many plotholes, like how did the people around the real Mi-do react when they found out that she had plastic surgery but there was another woman who looked exactly like her? How did Suyeon (PBY) go to live her life when Go Suyeon was declared dead?

Killing Cha Min in the last episode was unnecessary, instead of that plot they could have concluded on Seo Ji-Uk, maybe giving Go Suyeona another face.

Would not recommend watching.