On the June 15 episode, a contestant claiming to be a former JYP trainee and a friend of Jo Kwon appeared. The panelists had to guess whether or not she was actually a talented singer and a former trainee who trained with Jo Kwon, or a tone-deaf lawyer.

SEE ALSO: Top 10 Korean Netflix dramas right now: Which one is your favorite?

After a heated debate about her true identity, the contestant finally uncovered the mystery with a performance of ''On the Way to Breakup''. It turned out, she was a talented singer, named Maeng Jina. The surprise continued as Jo Kwon made an unexpected appearance for a duet with his friend.  

Later, it was fully revealed that Maeng Jina participated in a JYP audition program with Jo Kwon in the past. 

Watch her reunion with Jo Kwon and their amazing collaboration in the clip above!