An alien who came to Earth 400 years ago is almost able to return to his own planet, but when he meets a famous actress, he doesn't want to go home.

People are busy watching the screen. The person wearing a mysterious mask so called 'Gaetal' appears, and the Killing Vote begins.

Hong Seol and Yoo Jung attend the same college, but they couldn't be more different. Hong Seol is a poor, unpopular student with no money, while Yoo Jung is rich, well-liked, extremely smart, and popular. Hong Seol just wants to get through her college career quietly, but finds herself getting caught up in whatever Yoo Jung drags her into. Can Hong Seol break away, or will she continue to be the only person who sees Yoo Jung's true self?