On October 31, 2017, WM Entertainment announced Oh My Girl's comeback with new music planned for released some time in November.
[4] The song was written produced by Steven Lee, with additional songwriting by Mayu Wakisaka, and Sean Alexander, and Seo Ji-eum.
The lyrics describe the process of a young girl growing up as "planting the seeds of potential internally to pursue their future dreams".
[10][11][12] Produced by Sunny Visual for WM Entertainment, the music video of "Secret Garden" was directed by Yoo Sung-kyun.
Individual scenes reflects the lyrics of the song by depicting the members as young women discovering educational options and exploring career paths.