Humming centers around the relationship between a sound engineer and a supporting actor working on the post-production of an unfinished film, along with the anecdote of a deceased actor.

Forbidden love stories where gay men navigate the intense conflict between their deep-seated religious beliefs and their passionate desires. The 7 short films are: A Particular Friend (2023); Venena Bibas (2016); Keeping Faith (2017); Give Up the Ghost (2020); Barely in Love [לאהוב בקושי] (2013); The Vigrant [연극하는 날] (2021); Longing [אישך, תשוקתך] (2014).

Hyun-woo, who had a crush on Eun-jeong, confessed his love but was rejected by her. At this time, Eun-jeong handed over a mysterious fairy tale book to Hyun-woo. Hyun-woo finds out that Eun-jeong is lesbian through a fairy tale book and suffers from complicated emotions. In the end, Hyun-woo accepts Eun-jeong and fills in the last chapter of the fairy tale book and presents it to her.

In church, Han-jong learns that Seo-han is gay through outings. Han-jong says that he understands Seo-han, but is afraid of the unintended inconvenience caused by Seo-han.

Seung-soo visits Min-ji's funeral home, his younger sister's friend.