A high school girl wakes up each day with no memory of yesterday. When she agrees to date a shy classmate, can their love grow with every new beginning?

Three different coming-of-age stories from the point of view of the protagonists about how they deal with their realities in high school at the end of their teenage period as Gen Z.

Follow four people as they seek love and happiness: Kim Seol-A who once worked as an announcer and is now married to CEO Do Jin-Woo; Moon Tae-Rang, a chef and the oldest brother from a family of adoptees; and Moon Hae-Rang, Moon Tae-Rang's younger sister, who works as a secretary for Do Jin-Woo.

Based on the true story of writer Kang Chang-rae. Da-jung used to be a sweet working mom, but as colorectal cancer strikes her, she gradually becomes unable to eat. Da-jung's husband, Chang-wook, has never cooked before, but he begins cooking to take care of his wife's health and meals. Chang-wook handpicks decent ingredients and tries to develop healthy recipes to make a precious meal for his ill wife. Although he may be clumsy sometimes, he begins to realize how to treasure the time cooking and having a meal together with his family.

In a society where teenagers are required to receive a vaccine against romantic feelings, Ido falls in love with Eunha, a transfer student.