A woman’s husband dies by accident. Afterwards, the woman raises her little daughter alone, but she learns that she has brain tumour. In order to find a guardian for her daughter, she enters into a contract with a man as his time-limited wife.
- "100 Days Wife" takes over the MBC Saturdays & Sundays 21:45 time slot previously occupied by "My Daughter, Geum Sa-Wol" and will be replaced by "The Flower in Prison" April, 2016.
- Early working title was "100Ilui Anae" ("100 Days Wife").
- First script reading took place January 20, 2016 at MBC Broadcasting Station in Sangam, South Korea.
|Lee Seo-Jin||Uee||Kim Yong-Geon||Park Jung-Soo||Lee Whee-Hyang|
|Han Ji-Hoon||Kang Hye-Soo||Han Sung-Kook||Yoon Sun-Young||Oh Mi-Ran|
|Kim Young-Pil||Kim Yoo-Ri||Shin Rin-Ah||Kim Kwang-Kyu|
|Han Jung-Hoon||Seo Na-Yoon||Cha Eun-Sung||Park Ho-Joon|
Additional Cast Members: