Kang San Hyeok is part of a rescue operation. He is good looking but he has no memory of his childhood and Jung Young is a student surgeon at a hospital.
They meet at a forest in mysterious circumstances. They are forced to partner up to survive in the forest. As time goes by, they keep discovering their own traits as well as about the forest.
Also known as: 포레스트 / 시크릿 / Sikeulis / Sikeurit / Secret