After writing a best-selling novel, Tana (OC) needed an idea for her second masterpiece. A mysterious diary in the attic brought her to a story about Tzuyu, a girl who attempted suicide in that very house that Tana just bought. In desperate, Tana tried to communicate with Tzuyu's soul. And it worked! They became friend and Tzuyu became Tana's, literally, ghostwriter. As they knew each other, they discovered each other's dark side. With the scaredy-cat Nayeon, the sweet-pabo