Two ex-lovers navigate their lives post-breakup — struggling to redefine their relationship, from partners to strangers and everything in between.

So-Ssang has been a court lady for the past 14 years. One day, she learns something about Kwon-Min , who is the concubine of Crown Prince Yi Hyang. Meanwhile, Kwon-Min wants to be the only person loved by Crown Prince Yi Hyang. For that, Kwon-Min needs to oust Crown Prince Yi Hyang’s wife Bong-Sun. So-Ssang is given a mission by Kwon-Min. Her assignment is to oust Bong-Sun. - AsianWiki

When two men find their lives derailed, they meet challenges that force them to face a fierce battle to protect their loved ones.

Ja-yoon is a high school student who struggles with memory loss after she endured some unknown trauma during her childhood. While trying to uncover the truth, she is unwittingly dragged into a world of crime and finds herself on a journey that will awaken many secrets hidden deep within.

Today is righteous Chae-young’s first day of her transferred school after beaten a bully to nothing. Despite the dad’s warning, she saves her classmate Jong-gu from bullies again. Fascinated by her, Jong-gu asks how to be strong like her.

Soo-hyun, who has recently moved into a new house, buys a used washing machine through a second-hand app but finds out it doesn’t work. Annoyed by the seller’s irresponsibility, she leaves a comment calling the seller a con man, and reports it to the police. Little does she know that the seller is a psychopathic serial killer who uses an online second-hand market to lure his victims. Her comment renders his hunt for a new victim all but impossible so she becomes his next target. She starts receiving obscene phone calls, countless unwanted food deliveries, and strange men knocking on her door looking for a good time. A trip to the sender’s address proves deadly serious when the police and Soo-hyun find a man’s dead body.