Genius scientist Se-Jung lives with her cyborg husband Sung-Min. Prior to Se-Jung transforming Sung-Min into a cyborg, she erased his past memory and programmed new information into him. This led to them having a happy marriage, but those who knew Sung-Min prior to his transformation visit them and try to correct his distorted memory.
Cast & Credits
On a side note, this episode was written by the director, Choi Yoon Suk. He's been around KBS directing and producing since at least 2010, but this is his first writing credit, as far as I can tell. He did a really nice job here, both on the writing and directing fronts. Hope to see more from him in the future.
Not much specific to say about the music or acting, other than it was very good.
I don't want to say too much about the plot, since I feel like it might be easy to give away too much and slip into spoiler territory. So, basics: girl marries cyborg, and we get to see how it all came about. She programs him, essentially, because he can't remember his past, but we see very quickly how that becomes problematic for both of them, especially after one of their old classmates shows up out of nowhere.
And the ending! It's extremely rare for me to be surprised by an ending, and even rarer for me to think it was a good ending on top of that, but this one manages to pull that off. This one might even be worth a rewatch, just to see the details in a different light with knowledge of the ending in mind. Glad I chose this one as my first special of the 2016 season :)