Yeon Woo sees only black and white—until finding his missing “probe” soulmate who could restore his color. With secrets, love, and others searching too, the truth awaits.

Yeon Woo lives in a grey world as a Mono—until meeting Yoo Han triggers his first Color Rush. Afraid of obsession, Yeon Woo resists, but Yoo Han won’t let go.

Kim Sung-Joon (Park Si-Hoo) worked as a pilot, but after becoming in deaf in his right ear he has worked on the ground. He becomes desperate. Kim Sung-Joon then meets Eun-Hong (Yoon Eun-Hye) on a blind date. Even though he doesn't love her, he gets married to Eun-Hong. After their marriage, Sung-Joon treats Eun-Hong with indifference. Suddenly, Eun-Hong dies. Kim Sung-Joon soon learns for the first time about her real heart and her first love. Holding Eun-Hong's urn, he seeks out her first love.

Three elite North Korean sleeper agents live under cover for so long that they believe their cover stories are their real identities. They are shocked when they are ordered to kill one another or face death at the hands of an elite hit team.

Ji-wook is a virile detective with a reputation, but deep down in his heart, he always considered himself as a woman and finally decides to get a transsexual operation. However, his plan falls apart as vicious gang members start their revenge on him.

A highschool kid is bullied for putting lipstick on himself in a bathroom. As he dries his clothes in the laundry, he meets a mysterious girl.