Jong-hyuk Lee

Park Ri Hwan and Kim Haeng Ah are childhood friends who couldn't be more different. As the director of an eastern medicine hospital, Ri Hwan selflessly cares for his patients and his mother, while Haeng Ah charges through her life as a feisty and headstrong radio producer. Yet despite their differences and after all these years, Ri Hwan and Haeng Ah complement each other perfectly. (mydramalist.com)

Woo-Jin, Jun-A and some friends are on a trip to the mountains. They walk into a dark forest, which is restricted to the public. They soon find themselves in trouble, and find they can't get any reception on their cell phones. They are all in fear, especially Jung-A, who finds she can see into the future. (imdb)