Many years ago, a young woman named Min Hui fell for a young man named Xin Qi. They dreamed of spending the rest of their lives together and had even planned to marry. But things between them became complicated. Xin Qi suffered from a dangerous and potentially life-threatening heart condition. And a misunderstanding between them led them to split acrimoniously. Now, years later, they are reunited at a business event. Min Hui has risen to become an R&D director at a tech firm and Xin Qi has also made a name for himself in the business world. Deciding that “fate” has brought them back into contact for a reason, they start to talk. But Min Hui reveals that she has a son. What is more, a paternity test appears to show that the child is Xin Qi’s! Xin Qi reacts by taking on the role of the boy’s father – much to the child’s delight. But will this lead them back down the path to romance? Or has their love ship already sailed?

Chinese secret agent Da-hee receives intel that a large number of illegal firearms are being smuggled into Korea and is sent to investigate the case. She meets Su-han, who is supposed to help her with the case, but due to his lackluster skills they fight over trivial things. But as their witnesses are suddenly murdered, the two of them quickly become the prime suspects.

A woman prepares for her remarriage to the perfect man, a second generation chaebol, but in the midst of those proceedings, she realizes that her divorce from her ex was never legally finalized. She has to lead a double life, leading both men on until things are settled. However, her ex-husband-to be is involved in an accident and develops amnesia, completely forgetting that they're no longer a married couple.

A squad of soldiers fight in the Korean War's crucial Battle of Incheon.

A group of friends go through a series of horrifying events. A suicide that happened two years earlier is revealed.