The series follows the story of 'Kijun,' who returns to the world of 'Square' 11 years after leaving it by cutting his own Achilles tendon. He comes back to uncover the truth behind the death of his brother 'Kiseok,' who was the second-in-command of an organization, in a noir action thriller.
The series stars So Ji-sub, Gong Myung, Choo Young-woo, Ahn Gil-kang, Jo Han-chul, and Lee Jun-hyuk, and is set to premiere on the 6th.