Back at the mysterious facility Hyun Joon escapes his bonds to go after Sa Woo. It turns out this was all a test from the National Security System. Flash-forward 6 months to Hyun Joon and Sa Woo entering the NSS headquarters. There they are in for a few surprises, the love triangle is further developed, and they go on their first mission. Big Bang?s T.O.P. is seen for the first time as a mysterious character. The episode ends with Hyun Joon having a flashback to his childhood.