2017
Yoo Hyun-Jae is a member of a popular idol group. He has a lot of fans and he is a scandal maker. Meanwhile, Lee Ji-Hoon is an aspiring singer. He pretends to be studying for his civil servant exam, but he is actually struggling to become an idol.
2018
Naoko Kishikawa is a 31 year-old single who works for the undergarment section at a departmental store. She lives with her parents and a younger sister. One day, she meets a Korean photographer, Lee Ji-won. Ji-won's presence gradually changes Naoko and her family.
At a university football team reunion, former team manager Mitsuki Hiura confesses that she killed a person to quarterback Tetsuro Nishiwaki. She also reveals that as a result of a gender identity disorder, she is now living as a man. Tetsuro and his friends were puzzled by the events leading to her behaviour. They try to protect their old friend as they gradually discover the truth.
Mitsu marries a sensible man and hopes it makes her happy. But when her first love reconnects with her by fate, old feelings complicate everything.
Moo Goong Hwa is a former boxer. After the death of her husband, she has raised her daughter alone. She now works as a police officer. Meanwhile, Cha Tae Jin is an elite police officer who graduated from the police university. He is full of justice.
When a nerd finds a dark technology that allows him to get the perfect robot girlfriend, he accidentally also orders her boyfriend and gets caught in the middle of a very awkward love triangle.
Chi Yun is a skilled martial artist who grew up in the wilderness. He falls in love with Mu Qingmo at first sight, and openly pursues her once they meet again a couple of years later. She eventually reciprocates his affections, even though her brother had already promised her hand in marriage to the powerful noble Lingyun Shenglun. Shenglun is aware their marriage is only for alliance purposes, and promises to keep their relationship platonic. However, he eventually becomes attracted to the heroine, and is determined to keep her by his side forever.
A young man living alone in Italy faces the mysterious arrival of a woman who claims to be his time-traveling wife from the future.