On November 2, the staff of SBS' 'Master Key' posted a series of photos via their social media pages featuring various idol stars.

The selfies consisted of Henry, Lee Soo Geun, Jun Hyun Moo, EXO's Chanyeol, Wanna One members Kang Daniel, Ong Seong Wu, NU'EST's JR, SHINee's Key, TWICE's Sana, and WINNER's Song Min Ho holding up flags and goofing around at the outdoor set.

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The caption read, "Visual players holding up the 'Master Key' flag. Check out the selfies and be sure to tune into the next episode."

Meanwhile, the upcoming episode will present a new 'Angel Key' and Demon Key' concept which will be very intriguing for viewers.

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A post shared by SBS ???? (@sbs_masterkey) on Nov 2, 2017 at 12:26am PDT