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The drama is a sci-fi genre, telling one story about two worlds that are connected. Kim Kang Woo will be playing the role of a detective named Kim Jun Hyuk, living on 'Smart Earth' in the year 2037. Being in the future, the character faces an unexpected mystery when a crime occurs in a time when there's no crime. 

Kikwang will be playing the role of Lee Ho Soo, a social worker on 'Smart Earth', the same world as Kim Kang Woo. The character leads a straightforward life relying heavily on 'Smart Earth's system and laws, but becomes a team with Kim Jun Hyuk to uncover the truth behind the criminal case. 

You can expect some bromance from these two when 'Circle', also starring Yeo Jin Goo, Gong Seung Yeon, Hello Venus's Yooyoung, and more, premieres May 22 at 11PM KST!