Park Bo-yeong, Seo In-gook, Kang Tae-oh, Lee Soo-hyeok, Lee Da-won, Shin Do-hyeon, Woo Hee-jin, Jeong Ji-so, Song Joo-hee, Lee Seung-joon, Choi So-yoon, Han Ye-ri, Park Tae-in, Kwon Soo-hyeon, Nam Da-reum
Dong-kyung has been working hard ever since her parents passed away. Her life seems to get stable after working as an web novel editor for 6 years, but one day she gets diagnosed with a brain cancer. She blames her unlucky life and wishes to curse everything to disappear, which unintentionally calls Myul Mang, a messenger between humans and gods, to appear. He says that he can grant her wishes. As her last hope, she makes a contract with Myul Mang for hundred days to live as how she wants, risking her everything.