The most important thing for Na-young, who has lived her entire life in a small seaside village, is taking care of her family and friends. However, her mother tries to sell their precious house full of memories, and her younger brother insists on moving to Seoul. While Na-young struggles to accept the changes, she comes across bowling and begins to spend more and more time at the bowling alley.

Sang-won, Seung-jun and Min-wook are high school best chums. However, after graduation, they are in three different places in life; Sang-won is a college student, Seung-jun studies one more year to enter the college, Min-wook performs his military service. One day, two friends visit Min-wook in the army. Seung-jun has another reason for a visit to bring the break-up letter from Min-wook’s girl friend, Esther. Once three boys reunite, they spend one night of carousing devoted to the poor military boy and try to find when to give the letter. Before they separate, will the Dear John letter be delivered successfully? The trio allows their adventure to continue.

On the night that 17-year-old Dong-jun's only friend, Kang-hyeon, fell from a high place, Dong-jun made a choice that determined the direction of his entire life. Dong-jun's regrets and remorse following that choice made him experience life in three different universes. These are the various lives of the 42-year-old Dong-juns who live different lives in Seoul, Daegu and Busan 20 tears later.

In Japanese-occupied Korea, three freedom fighters are assigned a mission to assassinate a genocidal military leader and his top collaborator. But the plan goes completely awry amidst double-crossings, counter-assassinations, and a shocking revelation about one of the assassins' past.

A female detective investigates the cause of a high school girl’s death and uncovers a disturbing truth.

Mu-ok is the self-made owner of the established restaurant 'Pyongmanok' that has been drawing long lines of customers before social media existed. He is deeply troubled by his only son, Moon-seok, whom he hoped would inherit the family legacy, becoming a monk, leaving him with no one to carry on the family name. While Mu-ok is devastated by the thought that his family line would end with him, young kids come to his restaurant claiming Moon-seok as their father! Mu-ok, now given a chance to continue his family's legacy, enjoys happiness like never before. Meanwhile, Moon-seok revisits his life before becoming a monk—and stumbles upon a shocking revelation…

A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She suspects the school for what's happening and tries to discover what secret is hidden.

In a tranquil countryside hospital, radiologic technician Yeon-woo suffers from a mental disorder, the result of a childhood trauma in which he witnessed his younger brother die in a car accident. Won-hee, the hospital’s newest nurse, shows an interest in Yeon-woo, but he doesn’t appreciate her advances-he doesn’t even get along with hospital colleagues he’s known for years. Through a few chance encounters, they gradually grow closer and he opens up his heart to her. However, Won-hee has a secret that she hasn’t told Yeon-woo, and it appears that their love will never be.

Jun-ho who avoids relationship commitments he runs into Eun-ji, who he had met through a dating application. Jun-ho suggests that they date without any responsibilities, and they begin an undefined relationship.

Seonwoo Jung is an artist who claims “borrowing” rather than plagiarism when an old friend who’s been abroad re-enters, and agitates, her life: a secret meeting with a curator and her old friend suggests she seduce her partner.