Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.

A hotel concierge and a psychiatrist with traumatic childhoods form a heartfelt bond when they become entangled in a perplexing local murder case.

An old stately inn stands in the heart of Seoul. It may be old, discolored, and weathered, but Nakwon Inn exudes old-world charms. As the typical cold uneventful winter comes to an end at the inn, guests start to arrive one by one as if each had promised to be present. Strangely and coincidentally, each one of them repeats Never Twice as they enter. The truth is, they all have a fateful reason to be there. What could have brought these individuals together? And what do they all have in common considering their long-term stay, assigned room numbers, gender, age, and hometown? The real reason for coming to Nakwon Inn unfolds.

Depicts the trials and tribulations of four men who work at Laurel Tree Tailor Shop.

Sung geun, a physical education teacher, is at risk of losing his job when the school decides it needs an English teacher instead of a PE teacher. Therefore, he starts to devise a plan to change his job as an English teacher.

Jeongwoo was raised by his step mother and has a step sister, Hanna. He leaves abroad to make money for his family. But someday, he heard that his step mother has been killed by hit and run. Taechang, working together with Japanese yakuza, kidnaps Hanna to get Jeongwoo.

A woman who appears like fate, I will protect her till the end! 'Soo-han' who lost both her loved one and the motivation to live, works at a private loan company with her colleagues, 'Tae-yeong' and 'Jin-cheol'. Then one day, 'Soo-han' helps 'Ye-jin', who was being chased by gangsters, by hiding her in the house. Actually, 'Ye-jin' is the only successor of 'Taejin Group', and is being chased by 'Cheol-woong' who wants to take over the group. Meanwhile, CEO Cho, the CEO of the private load company, starts looking for 'Yejin' at the request of 'Cheolwoong', and soon learns that 'Suhan' and 'Yejin' were related ...

Mo Geum-san is a barber living in the rural area, who once aspired to be an actor. He starts to have doubts about his humdrum life after the village health center advises him to be examined at a larger hospital. He comes up with a plan to give a gift to his beloved ones in the coming Christmas. The plan is to invite everyone to the local culture center and to screen his self-made comedy movie based on his own tragic life.

Jeong-woo, who grew up with Han-na under their adoptive mother, goes abroad to contribute to a difficult family environment. However, after hearing the news of the death of his adoptive mother in a hit-and-run traffic accident, he returns to Korea, and found out that Cheol-jin, a member of the local organization Taechangpa, and former classmate of Han-na was involved. Meanwhile, Taechangpa joined hands with the Japanese yakuza organization to expand its power. They kidnapped Han-na to catch Jeong-woo, who was tightening them up. This makes Jeong-woo even angrier. The anger of a man who lost everything explodes!