Jin-ah (Son Ye-jin) is a district supervisor in her 30s at the coffeehouse franchise Coffee Bay (an actual Korean chain) and Jun-hui (Jung Hae-in) is an animator in his late 20s at video game developer Smilegate Entertainment.

The episodes give an intimate look into how they fall in love, struggle with their age differences (considered to be taboo in some circles), and find the courage to go public with their relationship to everyone around them.

The series also contains a secondary storyline about the struggles that female employees face in the company where Jin-ah works, as they try to climb the corporate ladder amidst sexual harassment, mistreatment, discrimination, and career sabotage from their male managers – all part of an unspoken culture of sexism considered to be normal among South Korean companies.

In August 2017, it was announced that Ahn Pan-seok was on board to direct Something in the Rain (aka Pretty Sister Who Buys Me Food).

[20] "Stand by Your Man" sung by Carla Bruni, and "Save the Last Dance for Me" by Bruce Willis are played frequently throughout the series.