Gyeongseong, 1945 — and Seoul, 2024. A pair adrift in time fight for survival against monsters born of human greed.

Following her father's murder, a revenge-driven woman puts her trust in a powerful crime boss — and enters the police force under his direction.

The intoxicating charm of a flirtatious art school classmate pulls a reluctant love cynic into a friends-with-benefits relationship.

A turbulent twister of lies, betrayals and revenge tears apart the seemingly picture-perfect marriage between a doctor and a filmmaker.

After meeting an untimely demise in separate incidents, Cha Min and Go Se-yeon discover they’ve come back to life in new bodies they don’t recognize.

Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.

The story of people driven by greed. Kang Pil-Joo grew up at an orphanage, but he now works as a managing director of a legal team at a corporation. He is acknowledged for his intelligence and his exemplary job performance. Some of those that work around him are jealous of him. Na Mo-Hyun is an environmental activist and a science teacher at a middle school. She is a good listener and laughs a lot. She dreams of a love driven by fate.

Although born in the same year, two childhood friends end up being 13 years apart because they have aged surprisingly at different places (worlds) for some strange reason. Now Eom Hyeon Soo is a 31-year-old woman but Sung Hae Sung is still a 18-year-old boy. Cha Won Yooung is a chef also interested in Eom Hyeon Soo.