A class-defying romance between a prince with nothing but status and a woman who lacks only that.

When mysterious alien spheres start invading the world, high school students are called upon to join the world’s first war against extraterrestrial forces.

When hijackers seize a Japanese flight and demand to fly to Pyongyang, a mysterious mastermind hatches a zany scheme to reroute the plane to Seoul.

Yeon Shi-eun is a model student, who ranks at the top at his school. Physically, he appears like a weak boy, but, by using his smarts, tools, and psychology, he fights against violence that takes place inside and outside of his school.

At work, she's a renowned assassin. At home, she's a single mom to a teenage daughter. Killing? That's easy. It's parenting that's the hard part.