She is also a single mother to Jae-yeong, a closeted lesbian teenager who studies at a prestigious private school.

Bok-Soon is sexually involved with a co-worker, Han Hee-Sung — a skilled killer, whose career progress was thwarted for unknown reasons.

Shortly before Bok-Soon is set to renew her contract, she is assigned a sensitive job that she is unwilling to fulfill.

[6] On January 4, 2022, Kill Boksoon confirmed production with the ensemble casting of Jeon Do-yeon, Sul Kyung-gu, Esom, and Koo Kyo-hwan as the lead roles.

The website's consensus reads: "Although its impact is blunted somewhat by meandering length and some cheesy visual effects, Kill Boksoon remains a pleasing punch to the gut for action fans.