Tiffany and Sunmi meet to talk about the early days of Girls' Generation, and Wonder Girls. Female idols pointed out that during their rookie times journalists and editors were naming both groups as rivals, and there were a lot of articles that were introducing Girls'Generation, and Wonder Girls in this way to the public.

Tiffany and Sunmi shared their experiences. Sunmi said that when she was promoting in the USA at an early age she was crying every day because she didn't know the English language, and had a hard time in a foreign country, she also admitted that she didn't like the food there.

Tiffany added that it was the same for her in Korea and that during one of the radio interviews she was asked to quickly read an advertisement but she didn't know Korean that much, and she couldn't do it.

Female superstars also talked about their role as K-POP Masters in the 'Girls Planet 999' survival tv show. Sunmi revealed that she wants to push trainees harder, to make them train well, and Tiffany added that she wants to be a harsh, and strict mentor. Then they both promised to not cry in front of trainees from Korea, China, and Japan.

First episode of 'Girls Planet 999' will be broadcasted in August.