In today's video, our guests sat in front of a rookie K-pop boy band without knowing who it was. Their mission was to guess the identity of this mystery group, but this time, there was an added layer of deception: One of our guests was actually a member of that K-pop group, who recently joined the team.

Here are some hints about the group: Four of its members were contestants on the 2023 audition program, "Boys Planet." As a quartet, they put out their pre-debut album in August, which grabbed the No. 1 spot on Hanteo, a real-time album sales chart and major music sales tracker in Korea. Also, the new member of this group, surnamed Shin, is only 17 years old!

So, were our guests able to figure out the group's identity? Did Shin help or hinder them in solving the mystery? How did our guests react when they learned that Shin was a K-pop singer? Check out our video to see how it all played out.