Kim Soo Hyun is a man on a mission as he goes after the cast of Running Man.

In the upcoming episode of SBS’ Running Man, Kim Soo Hyun will be making his variety program debut.

Unbeknownst to the show’s cast, Kim Soo Hyun was silently monitoring the members from afar during the episode’s opening.

The cast members are told to find seven hidden gold turtles while Kim Soo Hyun will be tasked with eliminating the members.

A staff member for the show dished on Kim Soo Hyun’s recording saying, “Kim Soo Hyun was at first very anxious but as time progressed, he became very active as he strategized and kept his idenitity hidden. It was difficult not to be anxious as even with a mask and hat, fans were recognizing Kim Soo Hyun.

The episode will air on SBS on July 8.

Photo credit: SBS