A woman attempting to reboot her life returns to Korea and becomes entangled with her childhood friend — with whom she shares a complicated history.

The series follows the bittersweet relationship between a banchan shop owner whose daughter enters the war of Korea's college entrance exams, and a top hagwon instructor.

Ban Ji-eum can endlessly reincarnate. But when her 18th life gets cut short, she dedicates the next one to finding her now grown-up childhood love.

Due to sudden deteriorating weather conditions, visibility on the Airport Bridge is severely impaired, leaving people stranded and at risk of the bridge collapsing due to a series of chain collisions and explosions. Amidst the chaos, the canine subjects "Echo" from the military experiment "Project Silence," who were being transported in secret, break free, and all human survivors become targets of relentless attacks.

Ha-eun, an ordinary housewife who has endured her husband's violence for 13 years, challenges her husband, who is a mixed martial arts champion, to a duel in the ring.

Jiwan quits her job and start working on a script to become a film director. She has worked on her script for many years but making it into a film seems almost impossible. As she runs around the field in frustration, shee sees a shining rainbow in a puddle and finds hope to work on a new project. She writes to a new script of the title 'Rainbow' that is about the fantastic band playing by 7 color.

During the festive holidays, brothers arrive to deliver a funeral announcement, with no mourners in sight and no money to secure a burial site. Suddenly, during the Lunar New Year holiday, they receive news of their mother’s passing. The five brothers, gathered to hold the funeral, find themselves helplessly stuck in an empty mourning hall with not a single visitor.