It is a continuation of the On Track Universe storyline started in 2020, as it portrays the return of the film club project, and it is tied to the release of the eighth mini album ROCK-STAR and its song "Leave". SKZFLIX was first announced in STEP OUT 2022 and scheduled to be released in 2022. But it was eventually postponed as teaser posters, describing it as a "music drama", were released on December 28, 2022. It was mentioned again in STEP OUT 2023 and scheduled to be released in 2023. (Source: StrayKidsWiki)