Ho Go-hee (Kim Hyang-gi) has a reputation of being a pushover at her school, but all of that changes when she discovers an app on her phone that takes revenge on any name she happens to insert into it.
| Also Known As: | Revenge Note |
| Directed by: | Seo Won-tae |
| Written by: | Han Sang-im, Kim Jong-seon, Kim Hwan-hee, Cha Eun-woo |
| Starring: | Kim Hyang-gi, Park Solomon |
| Extended Cast: | Park Mi-sun, Lee Doo-il, Ji Gun-woo, Park Kyung-lim, Ham Sung-min, Jo Ah-young, Lee Jini, Kim Hyun-seo, Lee Eun-saem, Eun Hae-sung, Oh Yoo-jin, Tae In-ho, Hwang Tae-kwang, Kim San-ho, Jung Eun-sung, Astro |
| Original network: | Oksusu, BTV |
| Original release: | 27 October 2017 – 5 January 2018 |
| No. of episodes: | 12 |
| Running Time: | 10-24 minutes |
| Executive producer(s): | Lee Jae-moon |
| Production Company(s): | Blue Panda, Hidden Sequence |
| Distributor: | Oksusu |
