Love at first sight is such a wonderful idea. However, how many of us have experienced it in real life? The answer is "rarely". If anything, we have mostly seen those occurrences in dramas. Why bother making another drama where a man and a woman cross paths coincidentally and suddenly fall in love? Therefore, this drama plans to show the viewers something more relatable - love that blooms in our everyday lives. This drama shows how a familiar relationship turns into a fluttering relationship, how a friendship suddenly turns into love, and how a once dull life suddenly becomes blinding due to love. This drama is about a man and a woman who have nothing more to share thanks to their completely different personalities. However, they have no idea whom they are in love with. Gradually, they rediscover themselves and reach out for love one step at a time.

Hyun, a best-selling writer, has found himself in a slump for a long time. In the meantime, he accidentally meets Yu-jin, an aspiring young writer. Hyun gets confused when Yu-jin confesses his love to Hyun. A 19-year-old student and Hyun’s son, Sung-kyung, who is skeptical about his life, meets Jung-won, a young married woman living next door. Sung-kyung has a good feeling for this freewheeling woman. A pure-hearted man, Soon-mo, who is Hyun’s best friend and also the publisher, meets his friend’s ex-wife.

Brilliant brain scientist Sewon suffers a horrific personal tragedy. Desperate to uncover what happened to his family, he conducts "brain syncs" with the dead to access their memories for clues.

A police detective from 1986 travels in time to the present to save his daughter.

A successful judge with exceptional work efficiency and quick thinking but also materialistic and obsessed with success, one day faces an unexpected crisis and becomes a public interest lawyer.