tvN's Circle's much awaited special preview episode aired on May 16 at 11 p.m. KST. The Yeo Jin Goo starrer drama's preview episode was full of short clips from the drama, behind the scenes and interviews.

In the drama, Yeo Jin Goo plays the role of a college student, Kim Woo Jin who is seen trying hard to film a series of difficult scenes in which he had to just run.

The said thriller drama is divided into two parts, "Part 1: Beta Project" and "Part 2: An Amazing New World," and it takes place in 2017 and 2037, respectively. The drama promises to show narratives in two different generations at the same time, in the same episode. Yeo Jin Goo and Gong Seung Yeon will show off their chemistry in "Part One: Beta Project," which is set in 2017.

Kim Kang Woo plays the role of a police detective when the world is divided into two territories namely, utopian "Smart Earth" and the other one as "Ordinary Earth" that's still filled with suffering.

According to Soompi, in the preview clip, Yeo Jin Goo revealed his toned he was seen doing push-ups in one of the scenes. In the interview, the actor said, "I should have told our director that I was just dieting, that I felt like I needed to lose some weight for the role; however, I told our director that I've been working out lately, which caused our director to say that he would put in a scene in which I am shirtless in the drama. I thought he was kidding at first but then he actually filmed the scene."

Yeo Jin Goo's character is emotionally complex but he pulls it off perfectly. In fact, PD Min Jin Ki previously praised the actor and said, "Because of his many years of experience, his aura and presence on set are unparalleled. He's an actor that can tell whole stories with just his eyes."

However, Yeo Jin Goo humbly mentioned, "While I was filming the scene [shirtless scene], I wasn't 100% satisfied [with the state of my body] so I'm a bit concerned about that scene." Watch the full video below!

Here is the Circle's latest teaser video which is all set to premiere on May 22 at 11 p.m. KST:

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