The single "Act. 4 Cait Sith" marked Gugudan's fourth single album release, continuing their narrative album series in early 2018.
- The lead track, "The Boots," was noted for its sophisticated and alluring concept, a departure from their previous fairy-tale themes.
- "Act. 4 Cait Sith" was released on February 1, 2018, by Jellyfish Entertainment.
- The album did not chart on the Gaon Album Chart.
Gugudan was a South Korean girl group formed by Jellyfish Entertainment. They debuted in 2016 and were known for their mystical and fairy-tale concepts.
Tracklist
