A 17-year-old named Kang Geon transfers to an elite high school attended only by the top 0.1% of South Korea.

Trained since the age of five in North Korea as a human weapon and a genius secret agent, he’s given a mission to infiltrate South Korea’s high society and build connections.

But making friends turns out to be the bigger challenge.

Living under the guise of a family with his father, a hacker watched by nations, and his mother a legendary assassin, he navigates a spy-action drama in search of true happiness.