[3] The series depicts the lies, secret, mystery, suspense and hypocrisy hidden behind the perfect lives of South Korea's top 0.1% women.

[4][5] It premiered on tvN on September 6, 2021, and aired every Monday and Tuesday at 22:30 (KST) till November 1.

Nam Ji-seon (Kim Ji-soo) is the star among the mothers at the international school where the children of elite go.

Hwang Na-yoon (Park Se-jin), a single mother who is the only one friendly to Song Yeo-ul.

On March 11, 2021, tvN confirmed that Cho Yeo-jeong, Kim Ji-soo, Ha Joon, Park Se-jin, and Kong Hyun-joo will be appearing in the drama High-class.