A down-to-earth teacher who has no idea she has become a key player in a corporate inheritance battle.

The drama explores the theme of whether a tiny chance of compatibility can grow into real love. While critics note that the first episode leans heavily on familiar tropes and "dated" character types, it sets the stage for the highly praised chemistry between Ha Seok-jin and Jeon So-min that carries the rest of the series. Flash Review: Something about 1% [1% of Anything]

The pilot episode, titled introduces Kim Da-hyun, a compassionate middle school teacher. While at work, she encounters an elderly man who has collapsed behind her school and takes the time to help him. Unbeknownst to her, the man is Chairman Lee, a multi-millionaire CEO of a massive conglomerate.