Story is set in the present day and the year 2037. When alien visitors arrive on Earth, humans learn new skills from them and take advantage of them; what ensues is a story of alliance, resistance, and love.

• Circle
• Min Jin-ki
• Yeo Jin-Goo
• Kong Seung-Yeon
• An Woo-Yeon
• Seo Hyun-Chul
• Kim Joong-Ki